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Rock, Mineral, and Fossil Collection

88 Results Found

Amethyst

Mineral Trigonal Amethyst

Category: Mineral Dimensions: 2.5" x 1.25" x 0" Location: Unknown Purchase Price: $4.00 Amethyst is a purple variety of quartz (SiO<span class="subscript">2</span>) and owes its color to irradiation, iron impurities, and the presence of trace elements. The name in ancient Greek means &quot;not intoxicated&quot;. Amethyst is the birthstone for February.
Ammonite

Fossil Massive Ammonite

Category: Fossil Dimensions: 1.5" x 1.25" x 0" Location: Unknown Purchase Price: Unknown Ammonites are extinct marine invertebrates. They first appeared in the Late Silurian to Early Devonian period (around 400 million years ago) and became extinct at the end of the Cretaceous period (65 million years ago).
Ammonite - Perisphinctes sp

Fossil Massive Ammonite - Perisphinctes sp

Category: Fossil Dimensions: 2.5" x 2.25" x 0" Location: Malm Formation, Tulear, Madagascar Purchase Price: $10.00 Perisphinctes is an extinct genus of ammonite cephalopod also known as a larger version of a snail. They lived during the Jurassic Period (200-146 million years ago) and serve as an index fossil for that time period.
Andesite

Rock Massive Andesite

Category: Rock Dimensions: 4" x 4" x 0" Location: Unknown Purchase Price: NA Andesite is an extrusive igneous, volcanic rock of intermediate composition (52-63% SiO<span class="subscript">2</span>). This sample is porphyritic, which means that at least one group of crystals is obviously larger than another group.
Aragonite

Mineral Orthorhombic Aragonite

Category: Mineral Dimensions: 1.5" x 1.25" x 1" Location: Most likely from Morocco Purchase Price: $2.95 Aragonite is a crystal form of calcium carbonate (CaCO<span class="subscript">3</span>). It will change to calcite at 380-470&deg;C. Its crystal shape is an orthorhombic system with acicular crystals. Repeated twinning results in pseudo-hexagonal forms.
Bismuth

Mineral Hopper Bismuth

Category: Mineral Dimensions: 1.5" x 1" x 1" Location: Lab Purchase Price: $10.00 Bismuth is a brittle metal with a white, silver-pink hue. The bright colors are from an iridescent oxide tarnish. Bismuth is naturally diamagnetic, meaning it repels magnets.
Carborundum

Mineral Carborundum

Category: Mineral Dimensions: 4" x 2.5" x 2" Location: Lab Purchase Price: $8.00 Silicon carbide (SiC), also known as carborundum. Grains of silicon carbide can be bonded together by sintering to form very hard ceramics which are widely used in applications requiring high endurance, such as car brakes, car clutches and ceramic plates in bulletproof vests.
Cave Popcorn (Coralloids)

Rock Massive Cave Popcorn (Coralloids)

Category: Rock Dimensions: 4" x 2.5" x 2" Location: Unknown Purchase Price: NA These commonly-seen structures form principally in subaerial cave settings by mineral precipitation as water seeps by capillary action from cave walls or from dripstone or flowstone.
Chalcopyrite (Peacock Ore)

Mineral Massive Chalcopyrite (Peacock Ore)

Category: Mineral Dimensions: 1.75" x 1.25" x 1" Location: Sonora, Mexico Purchase Price: $0.75 Chalcopyrite is a copper iron sulfide mineral (CuFeS<span class="subscript">2</span>). From Greek chalkos &quot;copper&quot;, and pyrites &quot;fire&quot;. The irridescent blues, greens, yellows, and purples are tarnish.
Chalcopyrite (Peacock Ore)

Mineral Massive Chalcopyrite (Peacock Ore)

Category: Mineral Dimensions: 1.75" x 1.25" x 1" Location: Sonora, Mexico Purchase Price: $0.75 Chalcopyrite is a copper iron sulfide mineral (CuFeS<span class="subscript">2</span>). From Greek chalkos &quot;copper&quot;, and pyrites &quot;fire&quot;. The irridescent blues, greens, yellows, and purples are tarnish.
Citrine

Mineral Trigonal Citrine

Category: Mineral Dimensions: 4" x 3" x 0" Location: Unknown Purchase Price: $8.00 Citrine is a yellow to golden-brown variety of quartz, with a hardness of 7 on Moh's Scale. Citrine's golden, amber color is caused by heat interacting with Amethyst in the depths of the earth. At times, Citrine is created by the artificial heating of Amethyst, which changes from purple to gold at 878&deg;F.
Coal

Rock Massive Coal

Category: Rock Dimensions: 2.25" x 1.5" x 0" Location: Unknown Purchase Price: NA Coal is an organic sedimentary rock that forms mainly from plant debris. Coal is combustible and is often mined for use as a fuel.
Conglomerate

Rock Massive Conglomerate

Category: Rock Dimensions: 3.5" x 2" x 1.5" Location: Unknown Purchase Price: NA Conglomerate is a clastic sedimentary rock that contains large (greater than 2 mm) rounded particles. The space between the pebbles is generally filled with smaller particles and/or a chemical cement that binds the rock together.
Coquina

Rock Massive Coquina

Category: Rock Dimensions: 7" x 4" x 3" Location: Unknown Purchase Price: NA Coquina is a sedimentary rock that is composed largely of the transported, abraded, and mechanically sorted fragments of either mollusks, trilobites, brachiopods, or other invertebrates.
Dalmatian Stone (Jasper)

Rock Massive Dalmatian Stone (Jasper)

Category: Rock Dimensions: 0.75" x 0.5" x 0" Location: Unknown Purchase Price: Unknown Jasper, an impure variety of silica, is an opaque rock of virtually any color stemming from the mineral content of the original sediments or ash. Patterns arise during the consolidation process.
Dolomite, Rosasite, Malachite

Mineral Dolomite, Rosasite, Malachite

Category: Mineral Dimensions: 3" x 2" x 2" Location: Morocco Purchase Price: $15 Purchased at 2026 Timpanogos Gem & Mineral Society Rock and Gem Show.
Fluorite Crystal

Mineral Cubic Fluorite Crystal

Category: Mineral Dimensions: 0.75" x 0.5" x 0.5" Location: Unknown Purchase Price: $0.35 Fluorite is a halide mineral composed of calcium fluoride, CaF<span class="subscript">2</span>. Many samples of fluorite exhibit flourescence under ultraviolet light, a property that takes its name from fluorite. It has a defining Mohs hardness of 4.
Fluorite Crystal

Mineral Cubic Fluorite Crystal

Category: Mineral Dimensions: 0.75" x 0.5" x 0.5" Location: Unknown Purchase Price: $0.35 Fluorite is a halide mineral composed of calcium fluoride, CaF<span class="subscript">2</span>. Many samples of fluorite exhibit flourescence under ultraviolet light, a property that takes its name from fluorite. It has a defining Mohs hardness of 4.
Fossil Sand Dollar

Fossil Massive Fossil Sand Dollar

Category: Fossil Dimensions: 3" x 3" x 0.5" Location: Morocco Purchase Price: $3 Purchased at 2026 Timpanogos Gem & Mineral Society Rock and Gem Show
Garnet

Mineral Cubic Garnet

Category: Mineral Dimensions: 1" x 1" x 1" Location: Unknown Purchase Price: $11.97 Garnet species are found in many colors and generally fit into one of 6 species. The general chemical formula is X<span class="subscript">3</span>Y<span class="subscript">2</span>(SiO<span class="subscript">4</span>)<span class="subscript">3</span>. Garnets have a cubic crystal system, and this specimen is a rhombic dodecahedron. Notice that each of the 12 faces is a rhombus and that garnet has a square cross section in one direction and a hexagonal cross section in the other directions.
Geode

Rock Massive Geode

Category: Rock Dimensions: 2.5" x 2" x 0" Location: Dugway Geode Beds, Utah, USA Purchase Price: NA After rock around the cavity hardens, dissolved silicates and/or carbonates are deposited on the inside surface. Over time, this slow feed of mineral constituents from groundwater or hydrothermal solutions allows crystals to form inside the hollow chamber.
Geode (Sugar Bomb)

Rock Massive Geode (Sugar Bomb)

Category: Rock Dimensions: 4" x 2.5" x 0" Location: Unknown Purchase Price: $4.00 After rock around the cavity hardens, dissolved silicates and/or carbonates are deposited on the inside surface. Over time, this slow feed of mineral constituents from groundwater or hydrothermal solutions allows crystals to form inside the hollow chamber.
Gneiss

Rock Massive Gneiss

Category: Rock Dimensions: 0" x 0" x 0" Location: Unknown Purchase Price: NA Gneiss is a common and widely distributed foliated metamorphic rock that has a banded appearance and is made up of granular mineral grains. It is formed at great depths below the earth's surface from formations that were originally either igneous or sedimentary.
Grape Agate

Mineral Grape Agate

Category: Mineral Dimensions: 3.5" x 2.5" x 2" Location: West Sulawesi Province, Indonesia Purchase Price: $40 Purchased at 2026 Timpanogos Gem & Mineral Society Rock and Gem Show. Grape agate, also called grape chalcedony or grape amethyst, is a botryoidal variety of quartz that occurs as clusters of small spheres. Specimen and gem-quality material is usually purple and sometimes blue-green. Grape agate was discovered in 2014 in West Sulawesi, Indonesia and first entered the global market in 2016. It derives its name from its appearance resembling a bunch of grapes. Despite its common trade name, grape agate is not agate because it lacks banding. Grape agate has been described as a form of chalcedony, but it is actually a form of macrocrystalline quartz (amethyst when purple)
Gypsum

Mineral Massive Gypsum

Category: Mineral Dimensions: 3" x 2.25" x 0" Location: Sigurd, Utah, USA Purchase Price: NA Gypsum (CaSO<span class="subscript">4</span>&middot;2H<span class="subscript">2</span>O) is a very soft sulfate mineral. It is the main constituent in gypsum board (sheetrock) and is also used in fertilizer. The word gypsum is derived from the Greek gypsos, &quot;chalk&quot; or &quot;plaster&quot;. It has a defining Mohs hardness of 2.
Gypsum, Desert Rose

Mineral Rosette Gypsum, Desert Rose

Category: Mineral Dimensions: 1" x 1" x 1" Location: Unknown Purchase Price: $0.50 The rosette crystal habit tends to occur when the crystals form in arid sandy conditions, such as the evaporation of a shallow salt basin.
Gypsum, Desert Rose

Mineral Rosette Gypsum, Desert Rose

Category: Mineral Dimensions: 9" x 5" x 3" Location: Unknown Purchase Price: $7.50 The rosette crystal habit tends to occur when the crystals form in arid sandy conditions, such as the evaporation of a shallow salt basin.
Gypsum, Satin Spar

Mineral Columnar Gypsum, Satin Spar

Category: Mineral Dimensions: 1" x 1" x 1" Location: Unknown Purchase Price: Unknown Satin spar is a crystalline mineral variety of gypsum. The crystals are most often silky, fibrous, and translucent (pearly, milky).
Gypsum, Satin Spar

Mineral Columnar Gypsum, Satin Spar

Category: Mineral Dimensions: 5" x 2" x 0" Location: Unknown Purchase Price: Unknown Satin spar is a crystalline mineral variety of gypsum. The crystals are most often silky, fibrous, and translucent (pearly, milky).
Gypsum, Selenite

Mineral Monoclinic Gypsum, Selenite

Category: Mineral Dimensions: 8" x 3.5" x 0.5" Location: Unknown Purchase Price: $3.00 Selenite is a crystalline mineral variety of gypsum (CaSO<span class="subscript">4</span>&middot;2H<span class="subscript">2</span>O). The crystals form in mica-like sheets that sometimes appear like columns.
Horn Coral

Fossil Massive Horn Coral

Category: Fossil Dimensions: 2.5" x 2" x 1.5" Location: Springville, Utah, USA Purchase Price: NA I found this fossil coral when hiking near Kelly's Grove.
Horn Coral

Fossil Massive Horn Coral

Category: Fossil Dimensions: 6" x 2.5" x 2" Location: Springville, Utah, USA Purchase Price: NA I found this fossil coral when hiking near Kelly's Grove.
Iron Pyrite (Fools Gold)

Mineral Cubic Iron Pyrite (Fools Gold)

Category: Mineral Dimensions: 4" x 2.5" x 0" Location: Unknown Purchase Price: $14.95 Pyrite is an iron sulfide with the formula FeS<span class="subscript">2</span>. The name pyrite is from the Greek word meaning &quot;fire&quot;. Pyrite creates sparks when struck against steel. It is nicknamed fool's gold because of its resemblance to gold.
Iron Pyrite (Fools Gold)

Mineral Cubic Iron Pyrite (Fools Gold)

Category: Mineral Dimensions: 2" x 1.5" x 1" Location: Unknown Purchase Price: NA Pyrite is an iron sulfide with the formula FeS<span class="subscript">2</span>. The name pyrite is from the Greek word meaning &quot;fire&quot;. Pyrite creates sparks when struck against steel. It is nicknamed fool's gold because of its resemblance to gold.
Knightia eocaena

Fossil Massive Knightia eocaena

Category: Fossil Dimensions: 5.25" x 4" x 0" Location: Green River Formation, Fossil Lake, Wyoming, USA Purchase Price: $18.47 A 50 million year old, Eocene-Era fossil fish. It is the state fossil of Wyoming and the most commonly excavated fossil fish in the world.
Lepidolite (Purple Mica)

Mineral Micaceous Lepidolite (Purple Mica)

Category: Mineral Dimensions: 1.75" x 1.5" x 1.5" Location: Unknown Purchase Price: $2.95 Lepidolite (KLi<span class="subscript">2</span>Al(Al,Si)<span class="subscript">3</span>O<span class="subscript">10</span>(F,OH)<span class="subscript">2</span>) is a lilac-gray member of the mica group. Named after the greek lepidos meaning &quot;scale&quot;, in reference to the scaly flakes. It is a major source of lithium, the world's lightest metal, which is used in batteries and other applications.
Limestone

Rock Massive Limestone

Category: Rock Dimensions: 0" x 0" x 0" Location: Unknown Purchase Price: NA Limestone is a rock that is composed primarily of calcium carbonate. It can form organically from the accumulation of shell, coral, algal and fecal debris. It can also form from the precipitation of calcium carbonate from lake or ocean water.
Milky Quartz

Milky Quartz

Category: Dimensions: 0" x 0" x 0" Location: Unknown Purchase Price: NA Milky quartz may be the most common variety of crystalline quartz and can be found almost anywhere. The white color may be caused by minute fluid inclusions of gas, liquid, or both, trapped during the crystal formation. The cloudiness caused by the inclusions effectively bars its use in most optical and quality gemstone applications. Milky quartz is widely used as a decorative landscaping material by gardeners.
Moqui Marble

Rock Massive Moqui Marble

Category: Rock Dimensions: 1" x 1" x 1" Location: Navajo Sandstone, south-central Utah, USA Purchase Price: NA The iron oxide concretions consist of sandstone cemented together by hematite (Fe<span class="subscript">2</span>O<span class="subscript">3</span>), and goethite (FeOOH). They were created by the precipitation of iron, which was dissolved in groundwater.
Muscovite Mica

Mineral Micaceous Muscovite Mica

Category: Mineral Dimensions: 2" x 1.5" x 0.25" Location: Unknown Purchase Price: Unknown Muscovite is the most common mica. It has a highly-perfect basal cleavage yielding remarkably-thin sheets which are often highly elastic.
Obsidian

Rock Massive Obsidian

Category: Rock Dimensions: 2" x 1.5" x 1" Location: Unknown Purchase Price: NA Pure obsidian is usually dark in appearance, though the color varies depending on the presence of impurities. Iron and magnesium typically give the obsidian a dark brown to black color.
Optical Calcite

Mineral Trigonal Optical Calcite

Category: Mineral Dimensions: 1.5" x 1.25" x 0.75" Location: Unknown Purchase Price: Unknown Calcite is the most stable polymorph of calcium carbonate (CaCO<span class="subscript">3</span>). It has a defining Mohs hardness of 3. Calcite crystals are rhombohedral. They display an optical property called birefringence, in which light is polarized and split into two paths. This results in a double image when viewed through the crystal.
Orthoceras

Fossil Massive Orthoceras

Category: Fossil Dimensions: 8" x 6" x 0" Location: Atlas Mountain Region, Draa Valey, Morocco, North Africa Purchase Price: $7.00 Orthoceras fossils are dated back to the Silurian Age 400 + million years ago and are the earliest recognizable animals. They are ancestors to the modern day squid. The name means straight horn.
Pecopteris

Fossil Massive Pecopteris

Category: Fossil Dimensions: 3" x 1.5" x 0" Location: Braidwood, Illinois, USA Purchase Price: $1.00 Geologic age is Middle Pennsylvanian 299-318 million years old. Francis Creek Shale. Plants bearing these leaves went extinct around the beginning of the Permian period.
Petrified Wood

Fossil Massive Petrified Wood

Category: Fossil Dimensions: 6" x 4" x 3" Location: Unknown Purchase Price: NA The petrifaction process occurs underground, when wood becomes buried under sediment and is initially preserved due to a lack of oxygen which inhibits aerobic decomposition. Mineral-laden water flowing through the sediment deposits minerals in the plant's cells; as the plant's lignin and cellulose decay, a stone mold forms in its place.
Planolites

Fossil Massive Planolites

Category: Fossil Dimensions: 3" x 2" x 0" Location: Unknown Purchase Price: NA Age: Precambrian to recent. These burrows, which may reach a width of 5/8&quot;, were made by wormlike animals that ate sediment as they burrowed. Planolites is one of the oldest of all fossils.
Planolites

Fossil Massive Planolites

Category: Fossil Dimensions: 5" x 3" x 1" Location: Unknown Purchase Price: NA Age: Precambrian to recent. These burrows, which may reach a width of 5/8&quot;, were made by wormlike animals that ate sediment as they burrowed. Planolites is one of the oldest of all fossils.
Pumice

Rock Massive Pumice

Category: Rock Dimensions: 3" x 2" x 2" Location: Unknown Purchase Price: NA Pumice is a textural term for a volcanic rock that is a solidified frothy lava typically created when super-heated, highly pressurized rock is violently ejected from a volcano.
Pyrite Disk

Mineral Cubic Pyrite Disk

Category: Mineral Dimensions: 3" x 3" x 0.25" Location: Illinois, USA Purchase Price: $8.98
Quartz

Mineral Massive Quartz

Category: Mineral Dimensions: 2" x 2" x 2" Location: Unknown Purchase Price: NA Quartz is the second-most-abundant mineral in the Earth's continental crust, after feldspar. It is made up of a continuous framework of SiO<span class="subscript">4</span> silicon-oxygen tetrahedra, with each oxygen being shared between two tetrahedra, giving an overall formula SiO2. It has a defining Mohs hardness of 7.
Quartz

Mineral Hexagonal Quartz

Category: Mineral Dimensions: 6" x 6" x 3" Location: Morocco Purchase Price: $10 Purchased at 2026 Timpanogos Gem & Mineral Society Rock and Gem Show.
Quartz Crystal

Mineral Trigonal Quartz Crystal

Category: Mineral Dimensions: 2" x 2" x 2" Location: Unknown Purchase Price: Unknown Quartz is the second-most-abundant mineral in the Earth's continental crust, after feldspar. It is made up of a continuous framework of SiO<span class="subscript">4</span> silicon-oxygen tetrahedra, with each oxygen being shared between two tetrahedra, giving an overall formula SiO2. It has a defining Mohs hardness of 7.
Quartz Crystal

Mineral Trigonal Quartz Crystal

Category: Mineral Dimensions: 2" x 0.75" x 0.75" Location: Unknown Purchase Price: Unknown Quartz is the second-most-abundant mineral in the Earth's continental crust, after feldspar. It is made up of a continuous framework of SiO<span class="subscript">4</span> silicon-oxygen tetrahedra, with each oxygen being shared between two tetrahedra, giving an overall formula SiO2. It has a defining Mohs hardness of 7.
Quartz Crystal

Mineral Trigonal Quartz Crystal

Category: Mineral Dimensions: 4" x 3" x 1" Location: Unknown Purchase Price: $5.00 Quartz is the second-most-abundant mineral in the Earth's continental crust, after feldspar. It is made up of a continuous framework of SiO<span class="subscript">4</span> silicon-oxygen tetrahedra, with each oxygen being shared between two tetrahedra, giving an overall formula SiO2. It has a defining Mohs hardness of 7.
Quartz Monzonite

Rock Massive Quartz Monzonite

Category: Rock Dimensions: 2.5" x 1.5" x 1.5" Location: Unknown Purchase Price: NA Quartz monzonite is an intrusive igneous rock. Granite contains more than 20% quartz while quartz monzonite contains only 5-20%. The mineral crystals are quartz (clear), feldspar (white), and biotite (black).
Quartzite

Rock Massive Quartzite

Category: Rock Dimensions: 2.5" x 1.5" x 0.5" Location: Unknown Purchase Price: NA Quartzite is a non-foliated metamorphic rock that is produced by the metamorphism of sandstone. It is composed primarily of quartz.
Rhyolitic Tuff

Rock Massive Rhyolitic Tuff

Category: Rock Dimensions: 3" x 2" x 0.5" Location: Richfield, Utah, USA Purchase Price: NA Tuff is a type of rock consisting of consolidated volcanic ash. Each layer represents a separate eruption that covered everything around with hot ash, dust, and small bits of rock and molten lava.
Rose Quartz

Mineral Massive Rose Quartz

Category: Mineral Dimensions: 4" x 2" x 2" Location: Unknown Purchase Price: $4.00 Rose quartz is a type of quartz that exhibits a pale pink to rose red hue. The color is usually due to trace amounts of titanium, iron, or manganese in the massive material.
Sandstone

Rock Massive Sandstone

Category: Rock Dimensions: 4" x 4" x 0.5" Location: Unknown Purchase Price: NA Sandstone is a clastic sedimentary rock made up mainly of sand-size (1/16 to 2 mm) weathering debris. Environments where large amounts of sand can accumulate include beaches, deserts, flood plains, and deltas.
Schist

Rock Massive Schist

Category: Rock Dimensions: 6" x 4" x 0.5" Location: Unknown Purchase Price: NA Schists constitute a group of medium-grade (between phyllite and gneiss) metamorphic rocks with more than 50% platy and elongated minerals such as micas, chlorite, graphite, and others. Most schists have been derived from clays and muds.
Scoria

Rock Massive Scoria

Category: Rock Dimensions: 5" x 3.5" x 2" Location: Unknown Purchase Price: NA Scoria is a volcanic rock containing many holes or vesicles, which form when gases that were dissolved in the magma come out of solution as it erupts. Scoria is most often dark in color and basaltic or andesitic in composition.
Septarian Nodule

Rock Massive Septarian Nodule

Category: Rock Dimensions: 3" x 3" x 0" Location: Near Zion National Park, Utah, USA Purchase Price: $8.00 Septarian nodules are concretions containing angular cavities or cracks. Latin word septum means &quot;partition&quot;. The yellow centers are calcite, the brown lines are aragonite, and the outer grey rock is limestone. Formed when bentonite clay balls dried and cracked then the ocean returned and deposited calcite in the cracks.
Shale

Rock Massive Shale

Category: Rock Dimensions: 4" x 3" x 0.25" Location: Sigurd, Utah, USA Purchase Price: NA Shale is a clastic sedimentary rock that is made up of clay-size (less than 1/256 mm) weathering debris. It typically breaks into thin flat pieces.
Siltstone

Rock Massive Siltstone

Category: Rock Dimensions: 0" x 0" x 0" Location: Unknown Purchase Price: NA Siltstone is a clastic sedimentary rock that forms from silt-size (between 1/256 and 1/16 mm) weathering debris. Stratification is likely to be obscure and tends to weather at oblique angles unrelated to bedding.
Slate

Rock Massive Slate

Category: Rock Dimensions: 0" x 0" x 0" Location: Unknown Purchase Price: NA Slate is a foliated metamorphic rock that is formed through the metamorphism of shale. It is a low grade metamorphic rock that splits into thin pieces. Slate is frequently gray in color.
Snakeskin Agate

Rock Massive Snakeskin Agate

Category: Rock Dimensions: 1" x 1" x 1" Location: Oregon Purchase Price: $15 Purchased at 2026 Timpanogos Gem & Mineral Society Rock and Gem Show. Snakeskin Agate is a distinctive type of chalcedony, often found in Oregon, characterized by raised, botryoidal (grape-like) formations on its surface that resemble snake scales. These nodules often appear in yellow, beige, or white, forming unique, textured patterns. It is primarily prized by collectors and jewelry makers for its unique, scaly texture rather than intense color.
Snakeskin Agate

Rock Massive Snakeskin Agate

Category: Rock Dimensions: 2" x 1" x 1" Location: Malheur County, Oregon, USA Purchase Price: Unknown Agate is a microcrystalline variety of silica, cheifly chalcedony, with multi-colored curved or angular banding. Snakeskin agate is named because of the unusual surface pattern.
Snowflake Obsidian

Rock Massive Snowflake Obsidian

Category: Rock Dimensions: 2" x 1.5" x 1" Location: Unknown Purchase Price: NA Obsidian consists mainly of SiO<span class="subscript">2</span>. In some stones, the inclusion of small, white, radially clustered crystals of cristobalite in the black glass produce a blotchy or snowflake pattern (snowflake obsidian).
Soapstone

Rock Massive Soapstone

Category: Rock Dimensions: 6" x 2" x 2" Location: Minas Gerais, Brazil Purchase Price: $4.00 Soapstone is a metamorphic rock, a talc-schist. It is largely composed of the mineral talc, which has a Mohs hardness of 1. It has been a medium of carving for thousands of years.
Stalagtite

Rock Stalactitic Stalagtite

Category: Rock Dimensions: 14" x 3" x 0" Location: Unknown Purchase Price: $0.25 Water containing carbon dioxide dissolves calcium carbonate from limestone, forming a calcium bicarbonate solution in underground caverns. This solution travels through the rock until it comes into contact with air. A chemical reaction takes place, and particles of calcium carbonate are deposited.
Sulfur

Mineral Massive Sulfur

Category: Mineral Dimensions: 6" x 6" x 3" Location: Utah, USA Purchase Price: $0.75 Sulfur is a chemical element with symbol S and atomic number 16. Elemental sulfur is a bright yellow. Octasulfur (S<span class="subscript">8</span>) is a soft yellow solid with only a faint odor, similar to matches. Sulfur is very flamable and burns with a blue flame.
Sulfur

Mineral Orthorhombic Sulfur

Category: Mineral Dimensions: 3" x 2" x 2" Location: Unknown Purchase Price: $9.00
Sunstone

Mineral Triclinic Sunstone

Category: Mineral Dimensions: 0.25" x 0.25" x 0.25" Location: Sunstone Knoll, Utah, USA Purchase Price: NA Sunstone is a transparent, yellowish labradorite (a plagioclase feldspar mineral). It is the official gemstone of Oregon.
Thunderegg

Rock Massive Thunderegg

Category: Rock Dimensions: 2" x 2" x 0" Location: Mount Hay, Queensland, Australia Purchase Price: Unknown Thunderegg is not synonymous with either geode or agate. A geode is a simple term for a rock with a hollow in it, often with crystal growth. A thunderegg on the other hand is a specific geological structure. The egg is composed of two distinct parts, the matrix or rind (the outer part) and the agate center which is usually called the lens or the window.
Titanium-coated Quartz

Mineral Trigonal Titanium-coated Quartz

Category: Mineral Dimensions: 1" x 1" x 0" Location: Lab Purchase Price: $10.00 This is a natural Arkansas quartz crystal bonded with titanium to give it a metallic rainbow shimmer.
Topaz

Mineral Orthorhombic Topaz

Category: Mineral Dimensions: 0.25" x 0.25" x 0" Location: Topaz Mountain, Utah, USA Purchase Price: NA Topaz is a silicate mineral of aluminum and fluorine with the chemical formula Al<span class="subscript">2</span>SiO<span class="subscript">4</span>. Pure topaz is colorless and transparent, but it is usually tinted by impurities. Orange topaz is the birthstone of November and the state gemstone of Utah. It has a defining Mohs hardness of 8.
Tourmaline (Schorl) on Quartz Matrix

Mineral Trigonal Tourmaline (Schorl) on Quartz Matrix

Category: Mineral Dimensions: 3" x 2" x 2" Location: Unknown Purchase Price: $6.00 Tourmaline is a semi-precious stone that is most often black but can also be brown, violet, green, or pink. It is a crystal boron silicate mineral compounded with elements such as aluminium, iron, magnesium, sodium, lithium, or potassium. It is 1-7.5 on Mohs hardness scale.
Trilobite - Calymene

Fossil Massive Trilobite - Calymene

Category: Fossil Dimensions: 3" x 2" x 0" Location: Atlas Mountain Region, Draa Valey, Morocco, North Africa Purchase Price: $2.00 Geologic age is Ordovician, 488-443 million years old. This trilobite grew to a length of 2.5 inches and fed on small edible particles in the water.
Trilobite - Cambropallas Telesto

Fossil Massive Trilobite - Cambropallas Telesto

Category: Fossil Dimensions: 8" x 6" x 0" Location: Jbel Wawrmast Formation, Morocco, North Africa Purchase Price: $25.00 Cambropallas Telesto trilobites are known to have inhabited the earth during the Cambrian Period 500 million years ago and are among some of the earliest trilobites to appear in the fossil record. They have well developed genal spines and clearly segmented glabella.
Ulexite

Mineral Triclinic Ulexite

Category: Mineral Dimensions: 1.5" x 1" x 0.5" Location: Unknown Purchase Price: $5.00 (NaCaB<span class="subscript">5</span>O<span class="subscript">6</span>(OH)<span class="subscript">6</span>&middot;5(H<span class="subscript">2</span>O))
Unknown

Mineral Unknown

Category: Mineral Dimensions: 6" x 5" x 4" Location: Morocco Purchase Price: $10 Purchased at 2026 Timpanogos Gem & Mineral Society Rock and Gem Show
Unknown

Fossil Massive Unknown

Category: Fossil Dimensions: 2" x 1.5" x 1.5" Location: Morocco Purchase Price: $2 Purchased at 2026 Timpanogos Gem & Mineral Society Rock and Gem Show.
Unknown

Fossil Massive Unknown

Category: Fossil Dimensions: 3" x 3" x 3" Location: Morocco Purchase Price: $3 Purchased at 2026 Timpanogos Gem & Mineral Society Rock and Gem Show.
Unknown

Mineral Massive Unknown

Category: Mineral Dimensions: 1.5" x 1" x 1" Location: Morocco Purchase Price: $3 Purchased at 2026 Timpanogos Gem & Mineral Society Rock and Gem Show.
Unknown Fossil Coral

Fossil Massive Unknown Fossil Coral

Category: Fossil Dimensions: 3" x 2" x 0" Location: Springville, Utah, USA Purchase Price: NA I found this fossil coral when hiking near Kelly's Grove.
Vanadinite Crystal Cluster

Mineral Hexagonal Vanadinite Crystal Cluster

Category: Mineral Dimensions: 5" x 4" x 3" Location: Morocco Purchase Price: $35 Purchased at 2026 Timpanogos Gem & Mineral Society Rock and Gem Show. Vanadinite is a rare, vibrant red-to-orange lead chlorovanadate mineral primarily used as a major industrial ore for vanadium, which strengthens steel. Highly prized by collectors for its hexagonal prisms, it forms in oxidized arid lead deposits, with top-tier specimens originating from Morocco. It is fragile, with a Mohs hardness of 3-4, and should be handled with care to avoid breaking or ingestion due to its lead content.
Willemite and Calcite

Rock Massive Willemite and Calcite

Category: Rock Dimensions: 2" x 2" x 0" Location: Sterling Hill Mine, Ogdensberg, New Jersey, USA Purchase Price: $6.80 Willemite is a zinc silicate mineral (Zn<span class="subscript">2</span>SiO<span class="subscript">4</span>). It is highly fluorescent (green) under shortwave ultraviolet light. Calcite (CaCO<span class="subscript">3</span>) glows red.
Zoisite

Rock Orthorhombic Zoisite

Category: Rock Dimensions: 3" x 2.5" x 2" Location: Tanzania Purchase Price: $7 Purchased at 2026 Timpanogos Gem & Mineral Society Rock and Gem Show. Zoisite is a calcium aluminum hydroxy sorosilicate mineral that crystallizes in the orthorhombic system. Known for its variety of colors, including green, white, pink (thulite), and the blue-purple gem tanzanite, it forms in metamorphic and pegmatite rocks. It is famously found in Tanzania, with a Mohs hardness of 6-7.