Mineral (Man Made Aura Treatment)

Yellow quartz crystal (likely citrine or iron-stained quartz)

Quartz, silicon dioxide (SiO₂)

Calcite

Calcium Carbonate (CaCO3)

Polished ammonite fossil

Ammonite, an extinct cephalopod; commonly polished specimens are from Jurassic or Cretaceous forms

Ornamental ring with likely blue sapphire and diamonds

Blue corundum (sapphire), Al₂O₃; surrounding stones appear diamond, C, set in gold-colored metal

Aura Druzy Agate (Star Shape)

Silicon Dioxide (SiO2) with Titanium/Metal Vapor Coating

Polished honey/orange calcite cabochon

Calcite (CaCO₃)

Yellow chalcedony or citrine-like polished stone

Chalcedony (microcrystalline SiO₂), possibly iron-stained quartz

Tumbled metallic sulfide specimen, likely chalcopyrite

Chalcopyrite (CuFeS₂), possibly polished or coated

Orange Calcite

Calcite (Calcium Carbonate, CaCO3)

Amethyst (rough purple quartz)

Quartz, SiO₂; purple color from trace iron and natural irradiation

Native Silver

Silver (elemental Ag)

Milky quartz

Quartz (silicon dioxide, SiO₂)

Polished banded agate (likely purple chalcedony/jasper)

Microcrystalline quartz, SiO₂; chalcedony with iron-oxide-rich jasper bands

Tumbled orange chalcedony (likely carnelian)

Microcrystalline quartz, SiO₂; iron-bearing variety commonly termed carnelian

Carnelian/chalcedony rough

Microcrystalline quartz (SiO₂), iron-oxide-colored chalcedony

Pink faceted gemstone, likely amethyst or pink quartz

Quartz (SiO₂), likely pale amethyst; exact identification requires testing

Tumbled ruby-bearing corundum (likely dyed or fracture-filled)

Corundum, aluminum oxide (Al₂O₃), with chromium producing ruby-red color

Aura Turquoise or Treated Turquoise Beads

Hydrated copper and aluminum phosphate (CuAl6(PO4)4(OH)8·4H2O) with metallic coating

Green Quartz (Prasiolite)

Silicon Dioxide (SiO2) with trace impurities

Calcite

Calcium Carbonate (CaCO3)

Orange druzy agate geode fragment

Microcrystalline quartz (SiO₂), with chalcedony and druzy quartz crystals

Unidentified polished dark stone with a possible quartz fragment

Indeterminate; appearance may reflect polished basalt, obsidian, or iron-rich rock, with a pale quartz/feldspar inclusion

Amethyst (rough quartz)

Quartz, SiO₂; purple variety colored mainly by iron impurities and irradiation

Yellow chalcedony (likely heat-treated or resin-coated)

Microcrystalline quartz, SiO₂

Small translucent tumbled crystal or gemstone

Indeterminate; likely quartz (SiO₂), possibly citrine or glass-like chalcedony

Amethyst quartz cluster

Quartz, SiO₂; purple coloration from iron impurities and irradiation

Tumbled banded agate beads

Agate, microcrystalline quartz (SiO₂), a variety of chalcedony

Amethyst (likely tumbled or polished)

Quartz, SiO₂; purple color commonly caused by trace iron and natural irradiation

Green calcite-bearing rock (likely calcite on a pale matrix)

Calcite, CaCO₃; exact matrix and green coloring cannot be determined from the image

Tumbled quartz (likely milky quartz)

Quartz, silicon dioxide (SiO₂)

Tumbled quartz (likely citrine or iron-stained quartz)

Quartz, silicon dioxide (SiO₂)

Green calcite (probable)

Calcite, calcium carbonate (CaCO₃)

Kidney Stone (Calcium Oxalate / Uric Acid)

Calcium Oxalate Monohydrate (Whewellite) / Calcium Oxalate Dihydrate (Weddellite)

Optical Calcite (Iceland Spar)

Calcite (Calcium Carbonate, CaCO3)

Fired Clay Brick (Anthropic Rock substitute)

Anthropogenic polycrystalline ceramic (predominantly Mullite and Quartz: Al6Si2O13 + SiO2)

Fossilized tooth or jaw fragment (likely fish or reptile)

Indeterminate vertebrate bone/tooth; mineralized hydroxyapatite, commonly Ca₅(PO₄)₃(OH)

Iridescent chalcopyrite (“peacock ore”)

Chalcopyrite, CuFeS₂, commonly surface-oxidized to covellite and related copper sulfides

Tumbled carnelian

Carnelian, orange-red chalcedony (microcrystalline SiO₂)

Tumbled yellow quartz, likely citrine or iron-stained quartz

Quartz (SiO₂), possibly citrine variety

Black Onyx

Silicon Dioxide (SiO2)

Tumbled yellow chalcedony (likely citrine or yellow quartz)

Quartz, SiO₂; potentially microcrystalline chalcedony

Diamond (in a gold ring)

Diamond (pure carbon, C)