Peach Moonstone
Orthoclase Feldspar (KAlSi3O8) with inclusions
mineral
Category
Man Made Object (Ring)
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Dragon Blood Jasper
Epidote-containing Quartz and Chlorite (SiO2 + (Ca2(Al, Fe)3(SiO4)3(OH)))
sedimentary
Sunstone
Oligoclase (Plagioclase Feldspar) with inclusions - (Ca, Na)((Al, Si)4O8)
mineral
Amethyst
Silicon Dioxide with iron impurities (SiO2)
mineral
Opal
Hydrated Silica (SiO2·nH2O)
mineral
Diamond (or high-quality simulant like Cubic Zirconia)
Carbon (C) - Native Element
mineral
Morganite (Pink Beryl)
Beryllium aluminum silicate Be3Al2(SiO3)6
mineral
Bloodstone (Heliotrope)
Silicon Dioxide (SiO2) - Variety of Chalcedony/Jasper
mineral
Pearl
Calcium Carbonate (Aragonite and Calcite), CaCO3
mineral
Pearl
Calcium carbonate (CaCO3) in the form of Aragonite or Calcite
mineral
Pearl
Aragonite (CaCO3) with Conchiolin
mineral
Tahitian Black Pearl
Biogenic Calcium Carbonate (Aragonite/Conchiolin Mixture), CaCO3
mineral
Amethyst Geode
Amethyst (Silicon Dioxide), Formula: SiO2
mineral
Amethyst
SiO2 (Silicon Dioxide with iron impurities)
mineral
Amethyst with Marcasite accents
Amethyst (Silicon Dioxide SiO2) and Marcasite (Iron Sulfide FeS2)
mineral
Pearl
Calcium Carbonate (Aragonite/Calcite mixed with Conchiolin), CaCO3
mineral
Peach Moonstone
Orthoclase (Potassium Aluminum Silicate), KAlSi3O8
mineral
Clear Quartz (Herkimer Diamond variant)
Silicon Dioxide (SiO2)
mineral
Rough Citrine Quartz
Citrine (Silicon Dioxide, SiO2 with iron impurities)
mineral
Smoky Quartz
Smoky Quartz (Silicon Dioxide - SiO2)
mineral
Bloodstone (Heliotrope)
Cryptocrystalline Quartz (SiO2 with inclusions of Iron Oxide/Chlorite)
mineral
Black Onyx
Chalcedony (SiO2) with parallel banding
mineral
Larimar
Pectolite (NaCa2Si3O8(OH))
mineral
Diamond
Diamond (pure Carbon, C)
mineral
Peridot (Olivine)
Magnesium Iron Silicate (Mg,Fe)2SiO4
mineral
Diamond (or Cubic Zirconia)
Crystallized Carbon (C) for Diamond; Zirconium Dioxide (ZrO2) for CZ
mineral
Carnelian Agate
Silicon Dioxide (SiO2) with iron oxide impurities
mineral
Chert / Yellow Jasper
Microcrystalline Quartz (SiO2)
sedimentary
Amethyst Cluster
Silicon Dioxide with Iron impurities (SiO2)
mineral
Coal (Anthracite / Bituminous)
Organic Sedimentary Rock (Carbon-based)
sedimentary
Tree Agate
Chalcedony (SiO2)
gemstone
Flint
Sedimentary cryptocrystalline quartz (SiO2)
sedimentary
Pyrite
Iron Sulfide (FeS2)
mineral
Pyrite in Matrix
Iron Sulfide (FeS2)
mineral
Chert with Limestone
Silicon Dioxide (SiO2) in Calcium Carbonate (CaCO3) Matrix
sedimentary
Chert (Tan/Brown variety)
Chert (Silicon Dioxide, SiO2)
sedimentary
Chert (Nodule)
Chert (SiO2)
sedimentary
Industrial Slag
Anthropogenic Vitreous Slag
igneous
Coquina
Biogenic Limestone (Calcite/Aragonite base, CaCO3)
sedimentary
Chert (specifically Jasper or Flint variety)
Cryptocrystalline Quartz (SiO2)
sedimentary
Amber
Succinite (Carbon-based organic compound; approximate formula C10H16O)
Mineraloid
Chert (Flint)
Chert (Microcrystalline Quartz, SiO2)
sedimentary