Clear Quartz
Silicon Dioxide (SiO2)
mineral
Category
Gemstone
Browse gemstone specimens identified by the Rock Identifier community.
Quartz (Clear/White)
Silicon Dioxide (SiO2)
mineral
Oceanside Agate (Orbicular Agate)
Silicon Dioxide (SiO2) - Variety of Chalcedony
mineral
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Clear Quartz Fragment
Quartz (Silicon Dioxide, SiO2)
mineral
Eudialyte
Eudialyte (Na4(Ca,Ce)2(Fe2+,Mn,Y)ZrSi8O22(OH,Cl)2)
mineral
Quartz Crystal
Silicon Dioxide (SiO2)
mineral
Chert (and Jasper/Chalcedony mixture)
Microcrystalline Quartz (SiO2)
sedimentary
Jasper (Iron-rich)
Silicon Dioxide (SiO2) with Fe2O3 (Hematite) impurities
sedimentary
Blue Topaz (specifically London Blue or Swiss Blue based on color saturation)
Al2SiO4(F,OH)2 (Aluminum Silicate Fluoride Hydroxide)
mineral
Jasper (Green Jasper/Chert)
Silicon Dioxide (SiO2)
sedimentary
Carnelian (Agate/Chalcedony)
Silicon Dioxide (SiO2)
mineral
Satin Spar (Gypsum)
Calcium Sulfate Dihydrate (CaSO4·2H2O)
mineral
Rough Diamond
Diamond (Pure Carbon: C)
mineral
Red Aventurine (Strawberry Quartz)
Silicon Dioxide (SiO2) with inclusions of Hematite or Goethite
Mineral
Rough Ruby (Corundum) in Zoisite Matrix
Al2O3 (Aluminum Oxide) with Ca2Al3(SiO4)3(OH)
mineral
Red Jasper
Silicon Dioxide (SiO2) with iron oxide inclusions
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz (Milky/Macro-crystalline)
Silicon Dioxide (SiO2)
mineral
Diamond
Diamond (C)
mineral
Quartz (Small Pebble)
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Quartz (Iron-stained)
Silicon Dioxide (SiO2)
mineral
Smoky Quartz
Smoky Quartz (Silicon Dioxide - SiO2)
mineral
Quartz (Common or Milky)
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Quartz Mineral
Silicon Dioxide (SiO2)
mineral
Quartz (Iron-stained)
Silicon Dioxide (SiO2)
mineral
Malachite
Copper carbonate hydroxide Cu2CO3(OH)2
mineral
Green Quartz (Prasiolite variant or Aventurine)
Silicon Dioxide (SiO2)
mineral
Obsidian
Volcanic Glass (SiO2 + impurities)
igneous
Quartz / Milky Quartz
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Clear Quartz
Silicon Dioxide (SiO2)
Mineral
Amethyst
Amethyst (Silicon Dioxide with iron impurities), SiO2
mineral
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Opal
Hydrated Silica (SiO2·nH2O)
mineral
Quartz
Silicon dioxide (SiO2)
Mineral