Chert (specifically a flint nodule component)
Microcrystalline quartz (SiO2)
sedimentary
Category
Mineral (Specifically A Variety Of Quartz)
Browse mineral (specifically a variety of quartz) specimens identified by the Rock Identifier community.
Chert (specifically Flint or Gray Chalcedony)
Microcrystalline Quartz (SiO2)
sedimentary
Chert (specifically Flint or Jasper variant)
Cryptocrystalline Quartz (SiO2)
sedimentary
Chert (with Limonite staining)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
sedimentary
Red Jasper
Silicon Dioxide (SiO2) with iron oxide inclusions
sedimentary
Granite
Granite (Felsic Plutonic Rock)
igneous
Banded Agate
Silicon dioxide (SiO2) - variety of Chalcedony
mineral
Blue Lace Agate (Polished Point)
Silicon Dioxide (SiO2) - Variety of Chalcedony
mineral
Mixed Gemstone Collection
SiO2 (Quartz varieties) and Biogenic CaCO3 (Nacre)
mineral
Jasper (specifically Red Jasper/Chert)
Silicon Dioxide (SiO2) with iron oxide inclusions
sedimentary
Jasper (brecciated or orbicular variety)
Silicon dioxide (SiO2) with iron oxide inclusions
sedimentary/mineral
Green Jasper
Silicon Dioxide (SiO2) with mineral inclusions
sedimentary
Yellow Jasper
Silicon Dioxide (SiO2) - variety Jasper
sedimentary
Beaded Jewelry (Assorted Gemstones)
Various minerals, including but not limited to Quartz (SiO2), Garnet (X3Y2(SiO4)3), Jade (Na(Al,Fe)Si2O6), Amethyst (SiO2),等の多様な組み合わせ
Mineral, Jewelry
Red Jasper
Silicon Dioxide (SiO2) with Hematite inclusions
sedimentary
Quartz (Quartzite fragment)
Silicon Dioxide (SiO2)
mineral
Amazonite
Amazonite (KAlSi3O8) - a variety of Microcline Feldspar
Mineral
Black Jasper
Silicon Dioxide (SiO2) with inclusions
sedimentary
Indian Agate
Silicon Dioxide (SiO2) - Microcrystalline Quartz
mineral
Chert (specifically Flint or Gray Chert)
Silicon Dioxide (Microcrystalline Quartz), SiO2
sedimentary
Black Onyx
Silicon dioxide (SiO2) - Chalcedony variety
mineral
Red Jasper
Jasper (Silicon Dioxide, SiO2)
sedimentary
Amber
Succinite (specifically for Baltic amber; general formula C10H16O)
Mineraloid (Organic)
Quartz (Clear Quartz/Rock Crystal)
Silicon Dioxide (SiO2)
mineral
Rose Quartz
Silicon Dioxide (SiO2)
mineral
Fuchsite in Quartz (Aventurine Quartz)
K(Al,Cr)2(AlSi3O10)(OH)2 (Fuchsite) + SiO2 (Quartz)
metamorphic
Leopard Skin Jasper
Chalcedony (cryptocrystalline quartz) with inclusions
Mineral
Fluorite (Blue)
Calcium Fluoride (CaF2)
mineral
Olivine (Peridotite/Dunite)
Olivine (Mg,Fe)2SiO4 within Peridotite
igneous
Blue Lace Agate
Chalcedony (a form of Quartz) - SiO2
Mineral
Quartz (Milky or Iron-stained)
Quartz (Silicon Dioxide, SiO2)
mineral
Blue Chalcedony
Silicon Dioxide (SiO2)
mineral
Chert (Jasper/Flint variety)
Silicon Dioxide (SiO2)
sedimentary
Tiger's Eye
Pseudomorph of Quartz after Crocidolite (SiO2)
metamorphic
Jasper (Cream/Yellow variety)
Silicon Dioxide (SiO2) with impurities
sedimentary
Milky Quartz (river pebble)
Quartz (Silicon Dioxide, SiO2)
mineral
Carnelian (Banded Agate)
Carnelian Chalcedony (SiO2)
mineral
Black Marble
Recrystallized Calcite (CaCO3)
metamorphic
Rose Quartz
SiO2 (Silicon Dioxide)
mineral
Rose Quartz
Silicon dioxide (SiO2) with trace amounts of titanium, iron, or manganese
mineral
Jasper Agate
Silicon dioxide (SiO2)
mineral
Fire Opal (in Matrix)
Hydrated Silica (SiO2·nH2O)
mineral