Diorite (Gneissic)
Diorite
Category
Browse mineral (variety of quartz) specimens identified by the Rock Identifier community.
Diorite (Gneissic)
Diorite
Quartz Pebble (Chalcedony/Agate)
Silicon Dioxide (SiO2)
Aventurine Quartz
Silicon Dioxide (SiO2) with inclusions (typically Fuchsite/Mica)
Rock Crystal Quartz
Quartz (SiO₂)
Quartz (Smoky/Milky Variety)
Silicon Dioxide (SiO2)
Jasper with Chert
Silicon Dioxide (SiO2) - Microcrystalline Quartz
Amethyst
SiO2 (Silicon Dioxide)
White Agate (Chalcedony)
Silicon Dioxide (SiO2)
Milky Quartz with Iron Staining
Silicon Dioxide (SiO2)
Smoky Quartz
Smoky Quartz (Silicon Dioxide - SiO2)
Quartz (Smoky/Milky variety)
Silicon Dioxide (SiO2)
Quartz (Milky/Cloudy Variety)
Silicon Dioxide (SiO2)
Chalcedony
Cryptocrystalline Quartz (SiO2)
Diorite
Diorite (Intermediate intrusive igneous rock)
Chert (Jasper variety)
Microcrystalline Quartz (SiO2)
Smoky Quartz
Silicon Dioxide (SiO2)
Lace Agate (specifically Red Lace Agate)
Silicon Dioxide (SiO2) - variety of Chalcedony/Quartz
Druzy Quartz
Quartz (Silicon Dioxide, SiO2)
Ferruginous Quartz (Iron-stained Quartzite)
Silicon Dioxide (SiO2) with Hematite/Limonite impurities
Raw Citrine
Citrine (Silicon Dioxide - SiO2)
Quartz (Smoky or Clear variety with inclusions)
Silicon Dioxide (SiO2)
Mixed Tumbled Stones Collection
Mixed Silicates and Carbonates (Quartz, Amorphous Silica, Carbonates)
Snowflake Obsidian
Vitreous Volcanic Rock (Amorphous Silicate), SiO2
Clear Quartz (Rock Crystal Fragments)
Silicon Dioxide (SiO2)
Amethyst Geode (Thunderegg)
Silicon Dioxide (SiO2) - Quartz Variety: Amethyst
Agate Geode
Silicon Dioxide (SiO2) - Chalcedony / Quartz Variety
Amethyst
Amethyst (Quartz variety), Silicon Dioxide (SiO2)
Banded Agate (specifically Sardonyx)
Silicon Dioxide (SiO2) - variety of Chalcedony/Quartz
Sardonyx Cameo
Silicon Dioxide (SiO2) - variety Cryptocrystalline Quartz
Blue Chalcedony Geode (with Quartz Druzy)
Silicon Dioxide (SiO2) - Microcrystalline variety of Quartz
Dyed Blue Agate (Slab)
Agate (Variety of Chalcedony/Microcrystalline Quartz), SiO2
Green Aventurine
Aventurine (a variety of Quartz, SiO2 with fuchsite inclusions)
Green Aventurine
Quartz (Aventurine variety) - SiO₂ with Fuchsite inclusions
Quartz (Milky/Yellowish variety)
Silicon Dioxide (SiO2)
Blue Sapphire
Corundum (Al2O3)
Rose Quartz
Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese
Quartz (Milky/Smoky variety)
Silicon Dioxide (SiO2)
Carnelian
Carnelian (a variety of Chalcedony, SiO2)
Mixed collection of Quartz varieties, Chalcedony, and metamorphic pebbles
Mixed gemstones (primarily Silicon Dioxide - SiO2)
Rose Quartz
Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese
Jasper (Cream/Yellow variety)
Silicon dioxide (SiO2)
Sandstone (Ferruginous)
Clastic Sedimentary Rock (SiO2 with Fe2O3/FeOOH cement)