Blue Lace Agate (Tumbled)
Silicon Dioxide (SiO2)
mineral
Category
Organic Gemstone (Fossilized Resin)
Browse organic gemstone (fossilized resin) specimens identified by the Rock Identifier community.
Red Jasper
Silicon Dioxide (SiO2) with Hematite inclusions
sedimentary
Orthoclase Feldspar (Salmon variety)
Orthoclase, KAlSi3O8
mineral
Quartz (specifically Milky Quartz Pebble)
Silicon Dioxide (SiO2)
mineral
Prehnite
Prehnite (Ca2Al2Si3O10(OH)2)
mineral
Schorl (Black Tourmaline)
Sodium Iron Aluminum Borosilicate Hydroxide; NaFe2+3Al6Si6O18(BO3)3(OH)3OH
mineral
Rose Quartz
Silicon dioxide (SiO2)
mineral
Green Aventurine
Silicon Dioxide (SiO2) with inclusions of Fuchsite (mica)
Mineral (variety of Quartz)
Blue Lace Agate
Chalcedony (SiO2) with trace minerals
mineral
Citrine (Yellow Quartz)
Silicon Dioxide (SiO2)
Mineral
Mahogany Obsidian
Volcanic glass containing Magnetite/Hematite
igneous
Yellow Beryl (Heliodor)
Beryllium aluminum silicate (Be3Al2Si6O18)
mineral
Rose Quartz
Silicon Dioxide with traces of titanium, iron, or manganese (SiO2)
mineral
Lapis Lazuli
Complex metamorphic rock primarily composed of Lazurite ((Na,Ca)8(AlSiO4)6(S,Cl,SO4,OH)2), Calcite, and Pyrite
metamorphic
Sodalite
Sodalite (Na8(Al6Si6O24)Cl2)
mineral
Pink Feldspar
Orthoclase (KAlSi3O8) or Microcline
mineral
Carnelian
Carnelian (Microcrystalline Quartz, SiO2)
Mineral
Blue Quartzite
Quartzite (primarily SiO2) with inclusions like Dumortierite or Magnesio-riebeckite
metamorphic
Green Quartz (Prasiolite/Adventurine/Jasper)
Silicon Dioxide (SiO2)
mineral
Epidote (likely Pistacite in Epidosite rock)
Epidote: Ca2(Al,Fe)3(SiO4)3(OH)
metamorphic
Chert (specifically Yellow Jasper/Flint)
Microcrystalline Quartz (SiO2)
sedimentary
Granatic Pegmatite
Pegmatitic Granite
igneous
Sapphirine in Matrix
Sapphirine (Mg,Al)8(Al,Si)6O20
mineral
Red Jasper
Silicon Dioxide (SiO2) with Iron Oxide (Fe2O3)
sedimentary
Red Jasper
Silicon dioxide (SiO2) with iron inclusions
sedimentary
Amazonite
KAlSi3O8 (Potassium Aluminum Silicate)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Quartz (specifically Citrine or Yellow Quartz)
Silicon Dioxide (SiO2)
mineral
Sugilite
Sugilite (KNa2(Fe,Mn,Al)2Li3Si12O30)
mineral
Amethyst (Quartz)
Amethyst (SiO2 with iron impurities)
mineral
Milky Quartz with Matrix
Quartz (Silicon Dioxide, SiO2)
mineral
Red Jasper (possibly Carnelian)
Silicon Dioxide (SiO2) with Hematite impurities
mineral
Amazonite
Amazonite (KAlSi3O8, a triclinic variety of Potassium Feldspar)
mineral
Kunzite (variety of Spodumene)
Lithium Aluminum Silicate (LiAlSi2O6)
mineral
Amethyst
Silicon Dioxide (SiO2) with iron impurities
mineral
Schorl (Black Tourmaline)
Sodium Iron Aluminum Borosilicate Hydroxide - NaFe2+3Al6Si6O18(BO3)3(OH)3OH
mineral
Fluorite
Calcium fluoride (CaF2)
mineral
Amazonite
Potassium Feldspar (KAlSi3O8)
mineral
Blue Apatite
Apatite (Group), Ca5(PO4)3(F,Cl,OH)
mineral
Quartz (specifically Milky or Rose Quartz variant)
Silicon Dioxide (SiO2)
mineral
Garnet (Almandine variety)
Almandine Garnet (Fe3Al2(SiO4)3)
mineral
Green Aventurine
Quartzite with Fuchsite inclusions (SiO2 + K(Al,Cr)2AlSi3O10(OH)2)
metamorphic