Synthetic (Not A Rock Or Mineral)

Polished hematite

Hematite (Fe₂O₃), likely a tumbled iron-oxide specimen

Polished purple gemstone, likely amethyst

Amethyst: purple quartz, silicon dioxide (SiO₂)

Carved labradorite fish

Labradorite, calcium-rich plagioclase feldspar (approximately (Ca,Na)(Al,Si)₄O₈)

Ruby (Pink to Red Corundum)

Al2O3 (Corundum with Chromium impurities)

Ruby

Corundum (Al2O3 with Chromium traces)

Blue Sapphire

Corundum (Al2O3)

Tumbled Clear Quartz and Citrine Points

Silicon Dioxide (SiO2)

Opalite

Synthetic Opalized Glass (SiO2 + additives)

Tumbled turquoise cabochon

Turquoise, CuAl₆(PO₄)₄(OH)₈·4H₂O

Diamond (Heart Cut)

Carbon (C)

Synthetic Resin Charm (Seal Shape)

Polymer Resin with plastic glitter / Polyethylene terephthalate glitters

Amethyst (Tumbled)

Silicon Dioxide (SiO2) with Fe3+ impurities

Weathered, iron-stained metamorphic rock (probable schist or gneiss)

Quartz–feldspar–mica metamorphic rock; exact identification requires a fresh surface and thin-section or mineral tests

Hematite bead bracelet

Hematite (iron(III) oxide, Fe₂O₃), likely polished magnetic hematite or hematite-coated beads

Diamond (or Cubic Zirconia simulant)

Carbon (C) - Diamond / Zirconium dioxide (ZrO2) - CZ

Cobaltoan Calcite / Pink Dolomite (Possible)

Cobaltoan Calcite: (Ca,Co)CO3; Pink Dolomite (or Thulite): CaMg(CO3)2 or Mn-Dolomite / (Thulite: Mn2+3Al2(Si2O7)(SiO4)O(OH))

Smoky Quartz

Smoky Quartz (Silicon Dioxide - SiO2)

Zircon

Zirconium Silicate (ZrSiO₄)

Faceted blue gemstone ring, likely synthetic spinel or glass; identity uncertain

Possibly synthetic blue spinel (MgAl₂O₄) or laboratory sapphire (Al₂O₃); the clear side stones may be cubic zirconia or glass

Colorless faceted gemstone, likely cubic zirconia or diamond

Uncertain from image; cubic zirconia (ZrO₂) is a common diamond simulant, while diamond is crystalline carbon (C)

Botryoidal hematite (specular hematite)

Hematite, Fe₂O₃

Smoky Quartz

SiO2 (Silicon Dioxide)

Magnetite or Hematite-rich Ore

Magnetite (Fe3O4) or Hematite (Fe2O3)

Malachite

Cu2CO3(OH)2 (Copper Hydroxide Carbonate)

Moonstone (bead form)

Potassium Aluminum Silicate (KAlSi3O8) - a variety of Orthoclase Feldspar

Cubic Zirconia

Zirconium Dioxide (ZrO2)

Iron-rich sandstone or weathered laterite

Ferruginous sandstone, composed mainly of quartz with iron-oxide cement (Fe₂O₃/FeOOH)

Polished tiger’s eye

Quartz (microcrystalline SiO₂) with crocidolite-derived iron oxides

Emerald

Beryl (Be3Al2(SiO3)6) with Chromium/Vanadium impurities

Uncertain fine-grained rock or mineral-bearing specimen

Indeterminate; possible quartz- or feldspar-bearing matrix with reflective grains

Polished amethyst cabochon

Amethyst, purple quartz (SiO₂)

Ruby (Corundum)

Corundum (Aluminum Oxide with Chromium), Al2O3:Cr

Blue Sapphire

Corundum (Al2O3 with trace Titanium and Iron)

Ammolite

Biogenic gemstone (Aragonite, CaCO3)

Polished hematite bead necklace

Hematite (iron(III) oxide, Fe₂O₃), likely polished beads

Opalite

Man-made opalescent glass (SiO2 + metal oxides)

Small faceted gemstone, likely diamond

Diamond (crystalline carbon, C)

Goldstone

Aventurine glass

Smoky Quartz

Smoky Quartz (Silicon Dioxide, SiO2)

Lapis Lazuli

Lapis Lazuli (Mineral composition: Lazurite (Na,Ca)8(AlSiO4)6(SO4,S,Cl,OH)2, Calcite, and Pyrite)

Note regarding baguette production (not a rock)

Digital text image - Somali language

Colorless faceted gemstone, likely quartz (rock crystal)

Quartz, silicon dioxide (SiO₂); exact identification cannot be confirmed from the photograph