Blue Quartz (or Blue Aventurine)
Silicon Dioxide (SiO2) with inclusions (typically Crocidolite or Dumortierite)
mineral
Category
Mineral, Jewelry
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Blue Moss Agate
Silicon Dioxide (SiO2) with mineral inclusions
sedimentary
Pyrite
Iron Sulfide (FeS2)
mineral
Blue Aventurine
Quartz (Silicon Dioxide, SiO2) with inclusions
mineral
Dyed Pink Quartzite
Tumbled and Dyed Quartzite (SiO2 with dye treatment)
metamorphic
Silicon Carbide (Carborundum)
Moissanite (SiC)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Prehnite
Prehnite (Ca2Al(AlSi3O10)(OH)2)
mineral
Rhodochrosite
Manganese Carbonate (MnCO3)
mineral
Lapis Lazuli (Tumbled Stone)
Na6Ca2(Al6Si6O24)(SO4,S,Cl)2 (Lazulite-rich Metamorphic Rock)
metamorphic
Malachite
Copper(II) carbonate hydroxide, Cu2CO3(OH)2
mineral
Onyx (Black Onyx)
Silicon Dioxide (SiO2) - Chalcedony variety
Mineral
Green Fluorite
Fluorite (Calcium Fluoride, CaF2)
mineral
Jasper (Multi-color Chert)
Silicon dioxide (SiO2)
sedimentary
Gold Ore
Native Gold (Au) in Matrix
mineral
Fossilized Shark Tooth (Otodus obliquus)
Otodus obliquus (composed primarily of Fluorapatite)
mineral
Goldstone and pink quartz bead strands
Goldstone is aventurescent copper-bearing glass; pink beads are likely rose quartz (SiO₂), though dyed or glass imitations are possible
mineral
Blue Chalcedony
Silicon Dioxide (SiO2)
mineral
Strawberry Quartz
Quartz with Hematite inclusions (SiO2 + Fe2O3)
mineral
Carnelian Agate
Chalcedony (SiO2)
mineral
Sea Glass
Silica (SiO2) - Amorphous
Mineral
Agate
SiO2
mineral
![Malachite (Copper carbonate hydroxide [Cu2CO3(OH)2]) — mineral](https://media.rock.id/malachite-ea8e5131-e453-45b7-bcb8-5bc371f25037-thumbnail.jpg)
Malachite
Copper carbonate hydroxide [Cu2CO3(OH)2]
mineral
Libyan Desert Glass
Impact-melt silica glass (SiO2 + traces of Al, Fe, Ti)
mineral (Tektite/Impactite)
Unidentified dark pebble
Undetermined; possibly polished basalt, chert, or iron-rich stone
mineral
Tumbled Moss Agate
Silicon Dioxide (SiO2) with inclusions of manganese or iron oxide
mineral
Black Obsidian and Hematite
Volcanic Glass (SiO2) and Hematite (Fe2O3)
igneous and mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Moss Agate (Crescent Moon Shape)
Silicon Dioxide (SiO2) with iron/manganese inclusions
mineral
Garnet (likely Pyrope or Almandine)
Garnet Group (complex nesosilicate minerals, e.g., Pyrope Mg3Al2(SiO4)3, Almandine Fe3Al2(SiO4)3, Spessartine Mn3Al2(SiO4)3, Grossular Ca3Al2(SiO4)3, Andradite Ca3Fe2(SiO4)3, Uvarovite Ca3Cr2(SiO4)3). The vivid red color in the image strongly suggests Pyrope or Almandine.
Mineral
Goldstone
Aventurine glass
mineral (man-made glass)
Quartz
SiO2 (Silicon Dioxide)
mineral
Green Aura Quartz (Titanium treated Kyanite or Quartz)
Silicon Dioxide (SiO2) or Aluminum Silicate (Al2SiO5) with Titanium/Metal Oxide coating
mineral (man-made aura treatment)
Petrified Wood
Silicified Wood (SiO2)
fossil
Rose Quartz Chips
Quartz (Silicon Dioxide - SiO2)
mineral
Azurite and Malachite
Azurite (Cu3(CO3)2(OH)2) and Malachite (Cu2(CO3)(OH)2)
mineral
Tourmalinated Quartz
Silicon Dioxide (Quartz) with Tourmaline inclusions (SiO2 + Na(Fe,Mg,Al,Li)3Al6(BO3)3Si6O18(OH)4)
mineral
Small polished dark mineral or gemstone fragment
Indeterminate; possibly smoky quartz, obsidian, or dark tourmaline
mineral
Hematite
Iron(III) oxide (Fe2O3)
mineral
Clear Quartz Crystal Cluster
Silicon Dioxide (SiO2)
mineral
Tiny metallic mineral fragment, possibly native gold
Native gold (Au), unconfirmed; could also be pyrite or chalcopyrite
mineral
Assorted Decorative Tumbled Stones (Quartz, Sodalite, Aventurine, Calcite)
Mixed Silicates and Carbonates (SiO2, Na8(Al6Si6O24)Cl2, CaCO3)
mineral