Chert Nodule
Microcrystalline Quartz (SiO2)
Category
Browse mineral (gemstone variety of beryl) specimens identified by the Rock Identifier community.
Chert Nodule
Microcrystalline Quartz (SiO2)
Crazy Lace Agate
Agate (Cryptocrystalline Quartz), Silicon Dioxide (SiO2)
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
Blue Aventurine
Silicon Dioxide (SiO2) with inclusions of Dumortierite
Carnelian Agate
Carnelian (Silicon Dioxide - SiO2)
Fluorite
Calcium fluoride (CaF2)
Turquoise (Rough)
Hydrated phosphate of copper and aluminium, CuAl6(PO4)4(OH)8·4H2O
Citrine Quartz
Silicon Dioxide (SiO2)
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)
Serpentine
Serpentine group minerals (e.g., Antigorite, Chrysotile, Lizardite). Chemical formula: (Mg, Fe)₃Si₂O₅(OH)₄
Lapis Lazuli
Lapis Lazuli (A metamorphic rock primarily composed of Lazurite: (Na,Ca)8(AlSiO4)6(S,Cl,SO4,OH)2)
Amethyst (Quartz variety)
Silicon Dioxide (SiO2) with iron impurities
Carnelian (a variety of Chalcedony)
SiO2 (Silicon Dioxide) with Iron Oxide impurities
Pyrite (Cube variety)
Iron Sulfide (FeS2)
Carnelian (a variety of Chalcedony)
SiO2 (Silicon Dioxide with Iron Oxide impurities)
Talc (Soapstone variety)
Talc (Hydrated magnesium silicate) - Mg3Si4O10(OH)2
Bull Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
Chalcedony (Agate/Carnelian variant)
Silicon Dioxide (SiO2)
Red Jasper
Silicon Dioxide (SiO2) with iron oxide inclusions
Milky Quartz (Water-worn Pebble)
Silicon Dioxide (SiO2)
Red Jasper
Silicon Dioxide (SiO2) with Iron inclusions
Tree Agate (Dendritic Agate)
Silicon Dioxide (SiO2) with Manganese/Iron inclusions
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Milky Quartz
Silicon Dioxide (SiO₂)
Milk Quartz (River Pebble)
Quartz (Silicon Dioxide, SiO2)
Grey Chalcedony
Silicon Dioxide (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Jasper (Yellow/Brown)
Silicon Dioxide (SiO2) with impurities
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Jasper, possibly Brecciated Jasper or Ocean Jasper due to patterns and color
Silicon Dioxide (SiO2), a variety of Chalcedony
Labradorite (Larvikite variety)
(Na,Ca)(Al,Si)4O8 (Plagioclase Feldspar)
White Precious Opal
Hydrated Silica (SiO2·nH2O)
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Quartz
Quartz (SiO2 - Silicon Dioxide)
Peridot
Olivine (Mg, Fe)2SiO4
Chert (Commonly known as Flint)
Microcrystalline Quartz (SiO2)
Jasper
Silicon dioxide (SiO2)
Charoite
Charoite (K(Ca,Na)2Si4O10(OH,F)·nH2O)
Obsidian
Volcanic Glass (SiO2 dominant)
Chert (Jasper/Flint variety)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Jasper Beach Pebble
Silicon Dioxide (SiO2) - Macro-crystalline Quartz
Amygdaloidal Basalt
Amygdaloidal Basalt (extrusive volcanic rock with secondary mineral infilling)