Serpentinite
Serpentinite (composed primarily of serpentine-group minerals like antigorite, chrysotile, and lizardite; chemical formula varies but generally Mg3Si2O5(OH)4)
Category
Browse man made (synthetic rock) specimens identified by the Rock Identifier community.
Serpentinite
Serpentinite (composed primarily of serpentine-group minerals like antigorite, chrysotile, and lizardite; chemical formula varies but generally Mg3Si2O5(OH)4)
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.
Granite Cobble/Pebble
Granite
Oak-grain Laminate (Industrial/Decorative Furniture Finish)
Melamine Resin-impregnated Decorative Paper on Particleboard (Cellulose/Thermosetting Plastic)
Bowling Ball (Brunswick T-Zone Deep Space)
Polyester resin / Polyurethane polymer
Diabase (Greenstone)
Diabase (also known as Dolerite)
Glazed Ceramic Tile
Fused Silicate-Clay composite
Amazonite
KAlSi3O8 (Potassium Feldspar, variety of Microcline)
Quartz (Engineered Quartz Surface)
Silicon Dioxide (SiO2) based composite
Red Slag Glass (Cullet)
Amorphous Silicon Dioxide (SiO2) with metallic dopants
Obsidian
Volcanic Glass (SiO2)
Sapphire
Corundum (Al₂O₃) with trace elements causing color variations.
White Sapphire
Corundum (Al2O3)
Chert (Cherty Shale / Flint)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Gold and Cubic Zirconia (San Judas Tadeo Pendant)
Native Gold (Au) with Synthetic Cubic Zirconia (ZrO2)
Bog Iron / Limonite Concretion
Goethite/Limonite mixture (FeO(OH)·nH2O)
Smoky Quartz
Silicon dioxide with aluminum impurities (SiO2)
Diamond (in Jewelry)
Carbon (C)
Pearl
Biogenic CaCO3 (Aragonite and Calcite)
Diamond
Diamond (pure Carbon, C)
Rough Emerald (Beryl)
Emerald (Be3Al2(SiO3)6 with Cr/V impurities)
Ruby
Corundum (Al2O3 with Chromium traces)
Turquoise
Hydrated phosphate of copper and aluminium: CuAl6(PO4)4(OH)8·4H2O
Obsidian
Obsidian (volcanic glass)
Sea Glass (Cobalt Blue)
Amorphous Silica (Glass with Cobalt additives)
Porcelain (Kaolin-based)
Alumina silicate ceramic (composed primarily of Kaolinite: Al2Si2O5(OH)4)
Granite
Granite (Mainly Quartz SiO2, Feldspar KAlSi3O8, and Mica KAl2(AlSi3O10)(OH)2)
Fursuit (Synthetic Fur Specimen)
Canis anthropomorphus syntheticus
Blue Topaz (specifically London Blue or Swiss Blue based on color saturation)
Al2SiO4(F,OH)2 (Aluminum Silicate Fluoride Hydroxide)
Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
Smoky Quartz
Smoky Quartz (SiO2)
Pearl
Organic gemstone (Calcium carbonate - CaCO3)
Pearl
Calcium carbonate (CaCO3) - mainly Aragonite with Conchiolin
Diamond (in a jewelry setting)
Cubic Carbon (C)
Chert (Flint)
Silicon Dioxide (SiO2)
Chert (Chert / Flint Variety)
Microcrystalline / Cryptocrystalline Quartz (SiO2)
Diamond
Diamond (pure carbon C)
Pearl
Calcium Carbonate (CaCO3) - Aragonite/Calcite
Emerald
Beryl (Be3Al2Si6O18), specifically the green variety colored by chromium or vanadium
Green Fluorite (likely synthetic or heat-treated for jewelry)
Calcium Fluoride (CaF2)
Coquina
Bioclastic Limestone
Chert (often called Flint in archaeological contexts)
Silicon Dioxide (SiO2)