Emerald In Matrix (Quartz/Calcite)
Beryl (Be3Al2Si6O18) with Chromium/Vanadium impurities
Category
Browse metamorphic rock (variety of quartz) specimens identified by the Rock Identifier community.
Emerald In Matrix (Quartz/Calcite)
Beryl (Be3Al2Si6O18) with Chromium/Vanadium impurities
Quartzite Pebble
Metamorphic Quartzite (SiO2)
Green Aventurine
Silicon Dioxide (Quartz) with Fuchsite inclusions (SiO2 + K(Al,Cr)2(AlSi3O10)(OH)2)
Chert (often called Flint)
Chert (Microcrystalline Quartz, SiO2)
Jasper
Silicon dioxide (SiO2)
Gold in Quartz Matrix
Native Gold (Au) with Quartz (SiO2) and Slate/Shale
Quartzite
Silicon Dioxide (SiO2)
Chert (Iron-Stained)
Microcrystalline or cryptocrystalline Quartz (SiO2)
Quartzite (Engineered Stone)
Silicon Dioxide (SiO2) based synthetic composite
Red Jasper (in Quartz/Chalcedony)
Silicon Dioxide (SiO2) with iron oxide inclusions
Tiger's Eye
SiO2 (Pseudomorph of Quartz after Crocidolite)
Quartzite
Quartzite (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Milky Quartz with Iron Inclusions
Quartz (Silicon Dioxide, SiO2)
Quartz (Milky/Gravel variety)
Silicon Dioxide (SiO2)
Unakite (Tumbled)
Unakite (altered granite)
Quartzite (River Pebble)
SiO2 (recrystallized Quartz)
Tiger's Eye
Pseudomorph of Quartz after Crocidolite (SiO2)
Tiger's Eye
Pseudomorph of Quartz after Crocidolite (SiO2 with iron oxide inclusions)
Chert Nodule
Chert (Cryptocrystalline variety of Quartz, SiO2)
Quartzite (Iron-stained)
Quartzite (primarily SiO2)
Quartzite
Quartzite (primarily SiO2)
Snowflake Obsidian
Vitreous volcanic silicate rock (SiO2) with Spherulite inclusions
Yellow Jasper
Silicon Dioxide (SiO2) with Goethite or Limonite inclusions
Milky Quartz Pebble
Silicon Dioxide (SiO2)
Mixed Gemstone Beaded Jewelry
Various minerals (e.g., Quartz varieties like Rose Quartz, Amethyst; Peridot; Garnet; etc.)
Quartzite with Quartz Vein
Quartzite (SiO2)
Agate
Chalcedony (cryptocrystalline variety of Quartz, SiO2)
Dzi Bead (Agate)
Chalcedony (cryptocrystalline variety of Quartz), SiO2
Chert (Jasper variety)
Cryptocrystalline quartz (SiO2)
Yellow Quartzite (Iron-stained)
Quartzite (primarily SiO2 with Fe2O3 staining)
Banded Chert
Chert (a microcrystalline variety of quartz, SiO2 with minor impurities)
Quartzite
Quartzite (composed primarily of SiO2)
Pyrite in Quartz
Iron Sulfide (FeS2) in Silicon Dioxide (SiO2)
Orange Quartzite (Tumbled Beach Pebble)
Quartzite (primarily SiO2)
Clear Quartz (Tumbled)
Silicon Dioxide (SiO2)
Quartzite
Quartzite (primarily SiO2)
Quartzite
Quartzite (SiO2)
Quartzite
Quartzite (primarily SiO2)
Quartzite Pebble
Metamorphosed Quartz Sandstone (SiO2)
Quartz (Milky/Smoky variety)
Silicon Dioxide (SiO2)
Citrine
Quartz (SiO2) - specifically, a variety of macrocrystalline quartz