Dendritic Agate
Silicon Dioxide (SiO2) with Manganese/Iron oxide inclusions
mineral
Category
Mineral, Specifically A Cryptocrystalline Quartz Variety
Browse mineral, specifically a cryptocrystalline quartz variety specimens identified by the Rock Identifier community.
Massive Quartz (Yellow/Citrine variety)
Silicon Dioxide (SiO2)
mineral
Chert (Flint) with Glauconite
Microcrystalline Quartz (SiO2)
sedimentary
Citrine Quartz
Silicon Dioxide (SiO2)
mineral
Quartz (Milky/Clear variety)
Silicon Dioxide (SiO2)
mineral
Rose Quartz
Silicon Dioxide (SiO2)
mineral
Rose Quartz
Quartz (SiO2) with trace elements of titanium, iron, or manganese
mineral
Chert (Flint)
Microcrystalline Quartz (SiO2)
sedimentary
Chert (and/or River Pebble)
Microcrystalline silica (SiO2)
sedimentary
Blue Quartz (Dumortierite Quartz)
Quartz (SiO2) with inclusions of Dumortierite (Al7(BO3)(SiO4)3O3)
mineral
Jasper
Silicon dioxide (SiO2)
sedimentary
Agate Geode Slice (with Druzy Quartz)
Silicon Dioxide (SiO2)
mineral
Amazonite
Amazonite (KAlSi3O8, a variety of Microcline)
mineral
Petrified Wood
Silicified Wood (SiO2)
sedimentary
Green Aventurine
Quartz (SiO2) with Fuchsite inclusions
Mineral
Chert (Flint)
Silicon Dioxide (SiO2)
sedimentary
Yellow Jasper
Silicon Dioxide (SiO2) with high iron inclusion
sedimentary
Jasper
Jasper (Silica/Quartz) - SiO2
mineral
Sandstone (likely Quartzose Sandstone)
Arenite (SiO2 predominantly)
sedimentary
Limestone (specifically Bituminous or Carbonaceous Limestone)
Calcium Carbonate (CaCO3) with Organic Impurities
sedimentary
Jasper
Silicon dioxide (SiO2)
sedimentary
Tiger's Eye
SiO2 (Quartz with inclusion of iron oxides)
mineral
Blue Aventurine
Silicon Dioxide (SiO2) with inclusions of Dumortierite
Mineral (Variety of Quartz)
Rose Quartz
Quartz (Silicon Dioxide - SiO2) with trace impurities of Titanium, Manganese, or Iron
mineral
Yooperlite (Sodalite-bearing Syenite)
Sodalite-rich Syenite
igneous
Green Apophyllite and Stilbite on Quartz Cluster
Apophyllite-(K) (KCa4(Si8O20)(F,OH)·8H2O), Stilbite-Ca (NaCa4(Si27Al9)O72·28H2O), Quartz (SiO2)
Mineral
Raw Green Jasper
Silicon Dioxide (SiO2) with iron silicate inclusions
sedimentary
Pink Granite
Granite (Felsic Plutonic Rock)
igneous
Banded Agate (River Stone)
Agate (Silicon Dioxide - SiO2)
mineral
Sandstone (likely River-tumbled Picture Sandstone)
Arenite (predominantly SiO2 with iron oxide impurities)
sedimentary
Red Moss Agate or Jasper-Agate
Silicon Dioxide (SiO2)
mineral
Sandstone (likely Quartzite-grade)
Arenite (primarily SiO2)
sedimentary
Rose Quartz
SiO2 (Silicon Dioxide)
mineral
Rose Quartz
SiO2 (Silicon Dioxide with trace inclusions of Phosphorus, Aluminum, or Titanium)
mineral
Rose Quartz
Quartz (Silicon Dioxide - SiO2) with trace amounts of titanium, iron, or manganese
mineral
Rose Quartz
Quartz (Silicon Dioxide - SiO2)
mineral
Jasper with Quartz inclusions
Silicon Dioxide (SiO2) - Microcrystalline Chalcedony
sedimentary
Chert (Flint Pebbles)
Microcrystalline quartz (SiO2)
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
Smoky Quartz
Quartz (Silicon Dioxide) - SiO2
mineral
Quartz (Milky/Smoky variety on matrix)
Silicon Dioxide (SiO2)
mineral
Chert (Flint/Chalcedony)
Microcrystalline Quartz (SiO2)
sedimentary