Lemon Quartz (Orizaba/Citrinated Quartz)
Silicon Dioxide (SiO2) with iron impurities/treatment
mineral
Category
Mineral (Specifically A Gemstone Variety)
Browse mineral (specifically a gemstone variety) specimens identified by the Rock Identifier community.
Learn about Mineral (Specifically A Gemstone Variety) in the encyclopedia
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Blue Calcite
Calcium Carbonate (CaCO3)
mineral
Chert (specifically Tan/Yellow Chert)
Chert (Microcrystalline or Cryptocrystalline Silica, SiO2)
sedimentary
Serpentine
Serpentine-group ((Mg,Fe,Ni,Al,Zn,Mn)3(Si,Al,Fe)2O5(OH)4)
metamorphic
Amazonite
K(AlSi3O8) - Potassium Feldspar (Microcline variant)
mineral
Amazonite (Tumbled Chips)
Potassium Feldspar (KAlSi3O8)
mineral
Peach Aventurine
Quartz variety (SiO2 + Hematite/Goethite inclusions)
mineral
Puddingstone (specifically Michigan/Gowganda Puddingstone)
Conglomerate (Jasper Conglomerate)
sedimentary
Apache Tear
Hydrated Obsidian (Natural Volcanic Glass)
igneous
Smoky quartz ring
Quartz (SiO₂), likely smoky quartz; the surrounding stones and metal cannot be identified reliably from the image.
gemstone
Rose Quartz
Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese
mineral
Blue Tiger's Eye
Pseudomorph of Quartz after Crocidolite (SiO2)
metamorphic
Amber (specifically Red or Cherry Amber)
Succinite (Resinite); Chemical formula: C10H16O
Mineraloid
Blue Chalcedony (Blue Lace Agate variety)
Silicon Dioxide (SiO₂)
mineral
Chalcedony (Agate/Carnelian)
Cryptocrystalline Silicon Dioxide (SiO2)
mineral
Almandine Garnet
Almandine, Fe3Al2(SiO4)3
mineral
Chert (Flint)
Chert (Silicon Dioxide, SiO2)
sedimentary
Agate (specifically a small Chalcedony nodule)
Agate (Cryptocrystalline variety of Quartz, SiO2)
mineral
White Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
mineral
Blue Sapphire
Corundum (Al2O3 with trace Titanium/Iron)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Chert
Silicon dioxide (SiO2)
Sedimentary
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Banded Gneiss (River Rock/Pebble)
Gneiss (specifically a banded variety often found as a river rock)
Metamorphic Rock
Clear Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Rough Emerald
Beryl (Be3Al2Si6O18 with Chromium/Vanadium impurities)
mineral
Citrine Quartz
Crystalline Quartz (SiO2) with iron impurities
mineral
Yellow Jasper
SiO2 (Silicon Dioxide)
sedimentary
Red Jasper
Silicon Dioxide (SiO2) with Hematite inclusions
sedimentary
Yellow Jasper
Silicon Dioxide (SiO2) - Opaque variety of Chalcedony/Quartz
sedimentary
Green Sandstone (Glauconitic Sandstone)
Glauconitic Sandstone (K(Fe,Al)2(Si,Al)4O10(OH)2)
sedimentary
Jasper
Silicon Dioxide (SiO2) - Microcrystalline Quartz
sedimentary
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Banded Agate (specifically Carnelian Agate)
Silicon dioxide (SiO2) - Chalcedony variety
mineral
Rose Quartz
Silicon Dioxide (SiO2) with trace amounts of Titanium, Iron, or Manganese
mineral
Moonstone
Orthoclase Feldspar (KAlSi3O8)
mineral
Desert Rose
Gypsum (variety Selenite) - CaSO4·2H2O
mineral
Green Calcite
Calcium Carbonate (CaCO3)
mineral
Rose Quartz
Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese
mineral
Green Moss Agate
Silicon Dioxide (SiO2) with Mineral Inclusions
sedimentary
Sunstone
Plagioclase Feldspar (specifically Oligoclase variety with hematite or goethite inclusions) Chemical Formula: (Ca,Na)(Al,Si)2Si2O8
Mineral
Yellow Jasper
Silicon Dioxide (SiO2) with iron oxide impurities
mineral