Mineral (Man Enhanced)

Chert Concretion (with typical hematite/limonite staining)

Sedimentary Concretion (SiO2 with FeO(OH)⋅nH2O)

Obsidian (likely black volcanic glass)

Obsidian; primarily amorphous volcanic silica glass, approximately SiO₂-rich rhyolitic composition

Blue Agate (likely dyed)

Silicon Dioxide (SiO2)

Ruby in Fuchsite (often sold as Ruby in Zoisite)

Corundum (Al2O3) in Chromium-rich Muscovite (K(Al,Cr)2(AlSi3O10)(OH)2)

Dyed Blue Agate Slice

Silicon Dioxide (SiO2) - Variety Agate

Milky quartz crystal with iron-oxide inclusions

Quartz (SiO₂), likely limonite/goethite-stained inclusions

Boulder Opal

Precious Opal in Ironstone (Amorphous Hydrated Silica, SiO2·nH2O)

Quartz Geodes and Crystal Clusters

Silicon Dioxide (SiO2)

Onyx (Black Onyx)

Onyx (Silicon Dioxide, SiO2)

Dyed Agate

Silicon Dioxide (SiO2)

Blue Agate (Dyed)

Silicon Dioxide (SiO2) - Microcrystalline Quartz

Dyed Chalcedony (Agate)

Silicon Dioxide (SiO2) with artificial pigment

Purple Garnet

Magnesium Aluminum Silicate (Pyrope-Almandine series) Mg3Al2(SiO4)3

Blue Onyx (Dyed Agate)

Cryptocrystalline Quartz (SiO2) with artificial pigment

Milky quartz (rough fragment)

Quartz, silicon dioxide (SiO₂)

Chalcopyrite

Chalcopyrite (CuFeS2)

Opalite (likely man-made glass)

Opalite; amorphous silica glass, not a natural mineral

Botryoidal chalcedony (likely agate/jasper variety)

Microcrystalline quartz, SiO₂

Polished black pebble, possibly obsidian

Volcanic glass (obsidian), likely; identification is tentative from the image

Boulder Opal

Hydrated amorphous silica (SiO2·nH2O) in ironstone matrix

Druzy Agate (specifically Black Druzy Agate)

Silicon Dioxide (SiO2)

Granite with Cupules / Bedrock Mortars

Granite (felsic intrusive plutonic rock)

Polished brown jasper (likely brecciated or orbicular jasper)

Microcrystalline quartz/chalcedony, SiO₂, with iron-oxide and other mineral inclusions

Turquoise cabochon

Turquoise; hydrated copper–aluminum phosphate, approximately CuAl6(PO4)4(OH)8·4H2O (composition varies)

Black glassy fragment, likely obsidian or industrial glass

Volcanic glass (obsidian), chiefly amorphous SiO₂; identification uncertain from image

Amber

Succinite (Fossilized Resin)

Polished agate slice

Chalcedony (microcrystalline quartz, SiO₂) with iron-oxide inclusions

Rough Emerald

Beryl (Be3Al2Si6O18 with Chromium/Vanadium impurities)

Serpentine-rich altered rock

Serpentinite, likely with chlorite and magnetite; exact identification requires testing

Polished yellow-orange cabochon, likely citrine (quartz)

Citrine, iron-colored quartz (SiO₂); identification is tentative from the photo

Sandstone (Water-worn Cobble)

Arenite (SiO2 with CaCO3 or Fe2O3 cement)

Dyed Blue Agate

Silicon Dioxide (SiO2) - Microcrystalline Quartz

Tumbled milky chalcedony (likely common opalite-like quartz)

Chalcedony, microcrystalline SiO₂; possibly pale common opal, hydrated SiO₂·nH₂O

Colorless quartz crystal (likely quartz fragment)

Quartz, silicon dioxide (SiO₂)

Turquoise

Hydrated phosphate of copper and aluminium: CuAl6(PO4)4(OH)8·4H2O

Polished silver sheen obsidian heart

Obsidian (volcanic glass), primarily rhyolitic silica-rich glass

Bornite (Peacock Ore)

Cu5FeS4 (Copper Iron Sulfide)

Peacock ore (iridescent chalcopyrite)

Chalcopyrite, CuFeS₂, commonly surface-treated to enhance iridescence

Blue opalite glass (likely man-made)

Opalite glass; a silica-based amorphous glass, not natural opal

Carborundum (Silicon Carbide)

Silicon Carbide (SiC) / Moissanite (natural form)

Clear quartz fragment (rock crystal)

Quartz, silicon dioxide (SiO₂)

Hematite

Iron(III) oxide (Fe2O3)