Ametrine
Ametrine (SiO2 - Silicon Dioxide with trace amounts of Iron)
mineral
Category
Mineral, Specifically A Cryptocrystalline Quartz Variety
Browse mineral, specifically a cryptocrystalline quartz variety specimens identified by the Rock Identifier community.
Smoky Quartz
Smoky Quartz (SiO2: Silicon Dioxide)
mineral
Quartz (Variety: Rose Quartz/Smoky Quartz mix)
Silicon Dioxide (SiO2)
mineral
Honey Calcite
Calcium Carbonate (CaCO3)
mineral
Petrified Wood
Silicified Wood (SiO2)
sedimentary
Jasper (brecciated or orbicular variety)
Silicon dioxide (SiO2) with iron oxide inclusions
sedimentary/mineral
Ametrine
Ametrine (SiO2 - Silicon Dioxide with varied iron impurities)
mineral
Milky Quartz
Quartz (SiO₂)
Mineral
Quartz (Small fragments)
Silicon Dioxide (SiO2)
mineral
Green Jasper
Jasper (Silicates, SiO2)
sedimentary
Chert (Jasper-like Silicate)
Microcrystalline quartz (SiO2)
sedimentary
Jasper (likely a variety of Yellow or Mustard Jasper)
Silicon Dioxide (SiO2) - Microcrystalline Quartz
sedimentary (chemically precipitated mineral)
Red Jasper
Red Jasper (variety of Chalcedony, SiO₂)
Mineral
Rose Quartz
Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese
mineral
Blue Lace Agate (with Amethyst Geode center)
Silicon Dioxide (SiO2) - Cryptocrystalline Chalcedony
mineral
Raw Emerald
Beryl (Be3Al2(SiO3)6) with Cr/V impurities
mineral
Granite (Pink/Red variety)
Phaneritic Felsic Intrusive Igneous Rock (composed primarily of Quartz, K-Feldspar, and Plagioclase)
igneous
Dyed Imperial Jasper (Sea Sediment Jasper)
Silicon Dioxide (SiO2) - Impure Quartz/Chalcedony
sedimentary
Brecciated Chert
Brecciated Chert (Microcrystalline Quartz, SiO2)
sedimentary
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Blue Lace Agate
Silicon Dioxide (SiO₂), a variety of Chalcedony
mineral
Yellow Jasper
Silicon Dioxide (SiO2) with iron hydroxides
sedimentary
Jasper (Red/Yellow)
Silicon Dioxide (SiO2) with impurities
sedimentary
Banded Chert
Sedimentary Cryptocrystalline Quartz (SiO2)
sedimentary
Chert (Flint)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
sedimentary
Amazonite
Microcline (variety Amazonite), K(AlSi3O8)
mineral
Red Granite
Phaneritic Felsic Intrusive Igneous Rock (primarily K-feldspar, Quartz, and Biotite)
igneous
Pebble (likely Quartz or Chert)
SiO₂ (Silicon Dioxide) - referring to the likely main mineral composition, Quartz. If it's chert, the scientific name remains SiO₂ with a microcrystalline structure.
Sedimentary Rock
Banded Agate (Tumbled)
Silicon Dioxide (SiO2) - Microcrystalline Quartz
mineral
Yellow Quartz (Chalcedony)
Quartz / Chalcedony (Silicon Dioxide, SiO2)
mineral
Honey Calcite
Calcium Carbonate (CaCO3)
mineral
Rose Quartz
Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese
mineral
Rose Quartz
Silicon Dioxide (SiO2) with trace impurities of Titanium, Manganese, or Iron
mineral
Jasper (specifically Green Jasper/Chert)
Jasper (Silicon Dioxide, SiO2)
sedimentary
Jasper with Quartz Vein
Silicon Dioxide (SiO2) with impurities
sedimentary
Amethyst
Amethyst (Silicon Dioxide - SiO2 with impurities of iron)
mineral
Rough Green Adventurine
Aventurine (Variety of Quartz, SiO2)
metamorphic
Petrified Wood
Silicified Wood (primarily SiO2)
metamorphic
Amazonite
Tectosilicate (variety of Microcline), K(AlSi3O8)
mineral
Pumice (specifically a water-worn, weathered variety)
Vesicular volcanic glass
igneous
Chert / Flint Nodule
Microcrystalline or Cryptocrystalline Quartz (SiO2)
sedimentary
Carnelian
Carnelian (Microcrystalline Quartz, SiO2)
Mineral