Amber
Succinite
Organic Mineraloid
Category
Gemstone
Browse gemstone specimens identified by the Rock Identifier community.
Chert (Flint)
Microcrystalline Quartz (SiO2)
sedimentary
Unakite
Epidotized Granite
metamorphic
Aventurine
Silicon Dioxide (SiO2) with inclusions
metamorphic
Quartz (Small Fragment)
Silicon Dioxide (SiO2)
mineral
Chlorastrolite (Greenstone)
Chlorastrolite (variety of Pumpellyite) - Ca2(Mg,Fe)Al2(SiO4)(Si2O7)(OH)2 · H2O
mineral
Milk Quartz (or Milky Quartz)
Silicon Dioxide (SiO2)
mineral
Agate (specifically Oco or Banded Agate)
Agate (a variety of Chalcedony), SiO2 (Silicon Dioxide)
mineral
Olivine (Peridotite)
Olivine Group; (Mg, Fe)2SiO4
igneous
Quartzite
Quartzite (mostly SiO2)
metamorphic
Yellow Quartz (Citrine Quartz Pebble)
Silicon Dioxide (SiO2)
mineral
Pietersite
Brecciated Crocidolite in Quartz (Chalcedony)
metamorphic
Citrine
Silicon Dioxide (SiO2) - Yellow Quartz variety
mineral
Peach Moonstone
Orthoclase (Potassium Aluminum Silicate), KAlSi3O8
mineral
Amazonite
Amazonite (KAlSi3O8); a green variety of Microcline feldspar
mineral
Unakite (Tumbled)
Epidotized Granite
metamorphic
Amethyst
SiO2 (Silicon Dioxide) with Iron (Fe3+) impurities
mineral
Red Jasper
Jasper (Silicon Dioxide) - SiO2
sedimentary
Rough Citrine Quartz
Citrine (Silicon Dioxide, SiO2 with iron impurities)
mineral
Smoky Quartz
Smoky Quartz (Silicon Dioxide - SiO2)
mineral
Blue Tiger's Eye
Pseudomorph of Quartz after Crocidolite (SiO2 with inclusions of asbestiform silicates)
mineral
Chert (Yellow or Brown Jasper)
Microcrystalline Quartz (SiO2)
sedimentary
Bloodstone (Heliotrope)
Cryptocrystalline Quartz (SiO2 with inclusions of Iron Oxide/Chlorite)
mineral
Greenstone (Greywacke or Nephrite Jade variant)
Metamorphosed mafic igneous or sedimentary rock (e.g., Actinolite-Chlorite Schist)
metamorphic
Larimar
Pectolite (NaCa2Si3O8(OH))
mineral
Rough Agate/Chert Nodules
Cryptocrystalline Quartz (SiO2)
sedimentary
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Smoky Quartz (Ferruginous Quartz)
Quartz (Silicon Dioxide, SiO2)
mineral
Iron-stained Quartz
Silicon Dioxide (SiO2) with Hematite/Limonite impurities
mineral
Red Beryl
Bixbite (Be3Al2Si6O18 with Mn3+ ions)
mineral
Quartz (Milky or Rough Quartz)
Silicon Dioxide (SiO2)
mineral
Carnelian (Chalcedony)
Silicon Dioxide (SiO2)
mineral
Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
mineral
Turquoise
Hydrated phosphate of copper and aluminum, CuAl6(PO4)4(OH)8·4H2O
mineral
Red Jasper
Silicon Dioxide (SiO2) with Hematite inclusions
mineral
Amethyst
Silicon Dioxide (SiO2) with trace Iron (Fe) impurities
mineral
Raw Emerald
Beryl (Be3Al2Si6O18 with Chromium/Vanadium)
mineral
Ruby (Corundum)
Aluminum oxide (Al2O3) with Chromium traces
mineral
Garnet (Tumbled)
Almandine / Pyrope Garnet (Fe3Al2(SiO4)3 to Mg3Al2(SiO4)3)
mineral
Rhodochrosite
Manganese Carbonate (MnCO3)
mineral
Red Jasper (Chert)
Silicon Dioxide (SiO2) with iron oxide inclusions
sedimentary
Jasper
Silicon Dioxide (SiO2) with impurities
sedimentary