Chert (Brecciated or Veined)
Silicon Dioxide (SiO2)
sedimentary
Category
Organic Gem Material (Botanical)
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Chert (Field Stone)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
sedimentary
Quartz (River Pebble)
Silicon Dioxide (SiO2)
mineral
Dalmatian Jasper
Dalmatian Stone (not a true Jasper, primarily a Perthitic Feldspar with Arfvedsonite)
igneous
Goldstone (Brown)
Aventurine Glass (Silicon Dioxide infused with Copper crystals)
mineraloid (man-made glass)
Heat-Treated Citrine (Amethyst Cathedral with Agate inclusions)
Silicon Dioxide (SiO2) with iron impurities
mineral
Dalmatian Stone
Dalmatian Jasper (Peralkaline Quartz-Feldspar Rock)
igneous
Opalite
Synthetic Glass (Simulated Opal)
mineral
Peridotite
Peridotite (Ultramafic Rock)
igneous
Blue Kyanite
Kyanite (Al2SiO5)
metamorphic
Banded Chert (Jasper)
Silicon Dioxide (SiO2)
sedimentary
Smoky Quartz (Rough)
Silicon Dioxide (SiO2)
mineral
Red Jasper
Silicon Dioxide (SiO2) with Iron inclusions
sedimentary
Smoky Quartz
Silicon Dioxide (SiO₂)
mineral
Chrysocolla
Hydrated copper phyllosilicate (Cu,Al)2H2Si2O5(OH)4 nH2O
mineral
Quartz with Hematite Inclusions
Silicon Dioxide (SiO2) with Ferric Oxide (Fe2O3)
mineral
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Smoky Quartz (with inclusions)
Silicon Dioxide (SiO2)
mineral
Moonstone
Feldspar (Orthoclase with Albite), (K,Na)AlSi3O8
mineral
Moonstone (specifically White Moonstone or Girasol Quartz)
Potassium aluminum silicate (KAlSi3O8)
mineral
Ferruginous Quartz
Silicon Dioxide (SiO2) with Iron Oxide inclusions
mineral
Red Jasper (possibly Wonderstone)
Silicon Dioxide (SiO2) with iron oxide inclusions
sedimentary
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Red Jasper
Silicon Dioxide (SiO2) with iron oxide inclusions
sedimentary
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Blue Sapphire
Corundum (Al2O3 with trace Titanium and Iron)
mineral
Smoky Quartz (with possible Feldspar inclusions)
Silicon Dioxide (SiO2)
mineral
Tumbled Amethyst
Quartz (SiO2) with trace amounts of Iron (Fe)
mineral
Smoky Quartz (Tumbled)
Silicon Dioxide (SiO2)
mineral
Moonstone
Orthoclase Feldspar (containing Albite lamellae), (KAlSi3O8)
mineral
Jasper (Iron-stained Chert)
Silicon Dioxide (SiO2) with impurities of Iron Oxide
sedimentary
Rhodonite
Rhodonite (Manganese Iron Magnesium Calcium Silicate)
mineral
Smoky Quartz
Smoky Quartz (Silicon Dioxide - SiO2)
mineral
Peridotite
Peridotite (predominantly Olivine and Pyroxene)
igneous
Emerald in Matrix
Emerald (Beryllium Aluminum Silicate - Be3Al2(SiO3)6)
mineral
Peridotite (with Olivine)
Peridotite (rich in Olivine, (Mg,Fe)2SiO4)
igneous
Rough Diamond
Diamond (Native Element Carbon, C)
mineral
Amethyst
Silicon dioxide with iron impurities (SiO2:Fe3+)
mineral
Amethyst
Silicon Dioxide (SiO2) with iron impurities
mineral
Moonstone
Orthoclase (KAlSi3O8) with Albite (NaAlSi3O8)
mineral
Zoisite with Ruby (Anyolite)
Anyolite (Calcium aluminium silicate hydroxide with Corundum)
metamorphic
Red Jasper (Ferruginous Chert)
Silicon Dioxide (SiO2) with Iron Oxide inclusions
sedimentary