Synthetic (Man Made Glass)

Browse synthetic (man made glass) specimens identified by the Rock Identifier community.

Learn about Synthetic (Man Made Glass) in the encyclopedia

View all →

Opalite

Goldstone

Zincite

Yttrium Aluminum Garnet

Blue Goldstone

Sideromelane

Lead Feldspar

Black Obsidian

Maskelynite

Obsidian

Tachylite

Map Jasper

Pearl (with Peridot)

Calcium carbonate (CaCO3) + Conchiolin; Peridot: Magnesium iron silicate (Mg, Fe)2SiO4

mineral

Chalk

CaCO3 (primarily Calcium Carbonate), biogenic sedimentary rock

Sedimentary

Common Marble

Calcium Carbonate (CaCO3)

metamorphic

Mother of Pearl (Nacre)

Calcium Carbonate (primarily aragonite, with conchiolin)

Organic Gemstone/Biomineral

Turquoise

Hydrated phosphate of copper and aluminium [CuAl6(PO4)4(OH)8·4H2O]

mineral

Marble

Recrystallized Calcite (CaCO3)

metamorphic

Rough Diamond

Diamond (Pure Carbon: C)

mineral

Diamond

Carbon (C)

gemstone

White Marble

Metamorphic Limestone (CaCO3)

metamorphic

Pyrite

Iron Disulfide (FeS2)

Mineral

Lapis Lazuli

Lapis Lazuli (a rock type, not a single mineral, composed primarily of lazurite, calcite, and pyrite)

Mineral, part of a rock

Pearl (Biogenic Mineraloid)

Calcium carbonate (Aragonite) and Conchiolin, CaCO3

mineral

White Marble

Recrystallized Calcite (CaCO3)

metamorphic

Sapphire

Corundum (Al₂O₃) with trace elements causing color variations.

Mineral

Azurite-Malachite (often a mixed specimen)

Azurite: Cu3(CO3)2(OH)2; Malachite: Cu2(CO3)(OH)2. The specimen appears to be a natural mixture or intergrowth of these two minerals.

Mineral

Dyed Quartz (often sold as 'Blue Quartz' or 'Blue Agate')

Silicon Dioxide (SiO2) with artificial pigment

mineral

Carnelian

Chalcedony (cryptocrystalline quartz), SiO2

Mineral

Blue Tiger's Eye

Riebeckite (crocidolite variety)

Mineral

Diamond (Rough)

Diamond (Carbon, C)

Mineral

Ruby

Corundum (mineral species), variety: Ruby (Al2O3 with Cr3+ as the chromophore)

Mineral

Moonstone (bead form)

Potassium Aluminum Silicate (KAlSi3O8) - a variety of Orthoclase Feldspar

Mineral

Granite

Granite (a common rock type, not a single mineral with a formula. Composed primarily of quartz, feldspar, and mica/amphibole).

igneous

Granite

Granite (felsic intrusive igneous rock)

igneous

Note: Item is not a geological specimen

Guitar Components (Steel, Nickel, Plastic, Wood)

Synthetic/Consumer Product

Oak-grain Laminate (Industrial/Decorative Furniture Finish)

Melamine Resin-impregnated Decorative Paper on Particleboard (Cellulose/Thermosetting Plastic)

not a rock (synthetic material)

Textile (Upholstery Fabric)

Woven Polyethylene/Polyester or Cotton Blend

Synthetic or Natural Fiber

Bowling Ball (Brunswick T-Zone Deep Space)

Polyester resin / Polyurethane polymer

Synthetic (not a natural rock)

Diamond

Carbon (C)

gemstone

Crushed Limestone

Calcium Carbonate (CaCO3)

Sedimentary

Marble

Marble (metamorphosed limestone/dolostone). Predominantly composed of Calcite (CaCO3) for marble derived from limestone, or Dolomite (CaMg(CO3)2) for marble derived from dolostone.

Metamorphic Rock

Metal Alloy (Jewelry)

Not a naturally occurring rock or mineral; likely a metal alloy for jewelry. Possible compositions include sterling silver (92.5% silver, 7.5% copper), or other silver/gold alloys.

Man-made Material (jewelry, metal alloy)