Green Aventurine
Silicon Dioxide (SiO2) with inclusions of Fuchsite mica
metamorphic
Category
Mineral, Jewelry
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Carnelian Agate
Silicon Dioxide (SiO2) - variety of Chalcedony
Mineral
Red Jasper
Silicon Dioxide (SiO2)
sedimentary
Magnetite (Lodestone variety)
Magnetite (Fe3O4)
mineral
Pyrite (Fool's Gold)
Iron Disulfide (FeS2)
mineral
Rough Diamond
Natural Diamond (Carbon, C)
mineral
Amber
Succinate (Fossilized Resin)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz (Milky/Clear variety)
Silicon Dioxide (SiO2)
mineral
Weathered iron-rich rock, possibly laterite or limonite-bearing stone
Hydrated iron oxides/hydroxides, chiefly limonite-goethite mixture; exact identification requires testing
mineral
Clear Quartz
Silicon Dioxide (SiO2)
mineral
Tiger's Eye
Silicon Dioxide (SiO2) with fibrous inclusions of Crocidolite
mineral
Carnelian
Carnelian (SiO2, Silicon Dioxide with Iron Oxide impurities)
mineral
Blue Sapphire (faceted in jewelry)
Corundum (Al2O3)
mineral
Snowflake Obsidian
Volcanic Glass with Cristobalite inclusions
igneous
Botryoidal Chalcedony
Silicon Dioxide (SiO2)
mineral
Pink Sapphire (Corundum)
Aluminum Oxide (Al2O3) with Chromium/Iron impurities
gemstone
Rough Diamond
Carbon (C)
mineral
Native Copper
Native Copper (Cu)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Turquoise
Hydrated phosphate of copper and aluminium (CuAl6(PO4)4(OH)8·4H2O)
mineral
Howlite
Calcium borosilicate hydroxide (Ca2B5SiO9(OH)5)
mineral
Eagle\'s Eye (Grey Tiger\'s Eye)
Pseudomorph of Quartz after Crocidolite (SiO2)
mineral
Pink Opal
Hydrated Silica (SiO2·nH2O)
mineral
Green Aventurine
Quartz variant (SiO2) with Fuchsite inclusions
mineral
New Jade (Serpentine)
Antigorite / Serpentine group (Mg3Si2O5(OH)4)
metamorphic
River Stone / Pebble
Clastic Sediment (composed largely of Quartz, Feldspar, and various rock fragments)
Mineral, Sediment
Kimberlite with Diamond
Kimberlite (Diamond formula: C)
igneous
Bort or Carbonado
C - Polycrystalline Diamond
mineral
Green Aventurine
Silicon dioxide with Fuscite inclusions (SiO2 + K(Al,Cr)2AlSi3O10(OH)2)
mineral
Green Aventurine
Silicon Dioxide (SiO2) with inclusions of Fuchsite mica
metamorphic
Peach Moonstone
Orthoclase Feldspar ((K,Na)AlSi3O8)
mineral
Asphalt aggregate (crushed stone in bitumen)
Artificial composite; predominantly crushed granite, basalt, limestone, and/or recycled aggregate bound by bitumen
sedimentary
Small rounded pebble
Unidentified lithic clast; likely fine-grained sandstone, mudstone, or basalt
sedimentary
Rugose Coral (Horn Coral)
Order Rugosa (extinct fossilized coral)
sedimentary
Aventurine (Green Quartz)
Quartz with Fuchsite inclusions (SiO2 with K(Al,Cr)2(AlSi3O10)(OH)2)
mineral
Amber
Succinite (C10H16O)
mineral
Quartz (Orangey-white variety)
Silicon Dioxide (SiO2)
mineral
Lepidolite
Lepidolite (K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2)
mineral
Turquoise (Rough Specimens)
Hydrous phosphate of copper and aluminium - CuAl6(PO4)4(OH)8·4H2O
mineral
Fossilized Horse Tooth
Equus ferus caballus (fossilized molar/premolar)
fossil
Clear quartz crystal point
Quartz (silicon dioxide, SiO₂), likely a polished or cut crystal
mineral