Olivine in Basalt (Peridot)
Magnesium Iron Silicate (Mg,Fe)2SiO4 (Mineral) / Scoriaceous Basalt (Host Rock)
Category
Browse organic gem material (botanical) specimens identified by the Rock Identifier community.
Olivine in Basalt (Peridot)
Magnesium Iron Silicate (Mg,Fe)2SiO4 (Mineral) / Scoriaceous Basalt (Host Rock)
Amber
Succinite (fossilized resin); C10H16O
Olivine (Peridot)
Magnesium Iron Silicate ((Mg, Fe)2SiO4)
Amber
Succinite (C10H16O)
Blue Goldstone
Aventurine Glass
Emerald in Matrix
Beryl (Be3Al2Si6O18) with Chromium/Vanadium impurities
Basalt
Basalt (Mafic volcanic rock)
Chert (Jasper/Limonitic Chert)
Silicon dioxide (SiO2)
Cubic Zirconia
Zirconium dioxide (ZrO2)
Amethyst Quartz
Silicon Dioxide (SiO2)
Amber
Succinite (organic fossilized resin)
Olivine (Peridot when gem-quality)
Magnesium Iron Silicate (Mg,Fe)2SiO4
Black Pearl (Tahitian Type)
Aragonite / Pinctada margaritifera (CaCO3 + Conchiolin)
Olivine (often within Peridotite)
Magnesium iron silicate, (Mg,Fe)2SiO4
Orthoclase Feldspar
Orthoclase (KAlSi3O8)
Peridotite (Pyroxenite/Serpentinized Dunite)
Ultramafic Rock (consisting primarily of Olivine and Pyroxene)
Amber
Succinite
Olivine/Peridot
Magnesium Iron Silicate (Mg,Fe)2SiO4
Peridot
Olivine (specific variety: gem-quality forsterite), (Mg,Fe)2SiO4
Turquoise
Turquoise (CuAl6(PO4)4(OH)8·4H2O)
Coquina / Limonite-stained Limestone
Sedimentary Limestone with Iron Oxyhydroxide (FeO(OH)·nH2O)
Red Jasper (River Siltstone)
Silicon Dioxide (SiO2) with iron oxide inclusions
Diamond
Diamond (pure carbon, C)
Diamond (Cut Specimen)
Diamond (pure carbon, C)
Gemstone Sand (Mineral Assortment)
Mixed Mineral Concentrates (Commonly including Quartz SiO2, Garnet X3Y2(SiO4)3, and Tourmaline (Na,Ca)(Li,Mg,Al)3(Al,Fe,Mn)6(BO3)3(Si6O18)(OH,F)4)
Chrysocolla Chalcedony
Hydrated Copper Phyllosilicate (Cu,Al)2H2Si2O5(OH)4 + SiO2
Pearl
Calcium carbonate (CaCO3) + organic conchiolin (Biogenic Mineral)
Garnet (Almandine)
Almandine (Fe3Al2(SiO4)3)
Olivine
Olivine group (Mg, Fe)2SiO4
Olivine (Peridotite)
(Mg,Fe)2SiO4 (Magnesium Iron Silicate)
Olivine (Peridotite)
Olivine Group; (Mg, Fe)2SiO4
Peridot (Olivine)
Olivine (Magnesium Iron Silicate), (Mg,Fe)2SiO4
Mother of Pearl (Nacre)
Aragonite (CaCO3) with Organic Matrix
Amber (Green variation)
Succinite
Rough Diamond
Diamond (C)
Basaltic Tuff / Volcanic Breccia
Pyroclastic Breccia / Lithic Tuff
Shungite
Non-crystalline carbon (allotrope of carbon)
Amethyst
SiO2 (Silicon Dioxide) - Purple variety of Quartz
White Quartz Pebble
Crystalline Silicon Dioxide (SiO2)
Turquoise
CuAl6(PO4)4(OH)8·4H2O
Fossil Shell (Bivalve)
Class Bivalvia (Likely a member of the Ostreidae or Gryphaeidae family), CaCO3
Sapphire (Rough)
Corundum (Al2O3)