Synthetic (Not A Natural Rock)

Aquamarine in Onyx / Blue Topaz Pendant

Beryl (Be₃Al₂Si₆O₁₈) or Topaz (Al₂SiO₄(F,OH)₂)

Yellow faceted gemstone, likely citrine or yellow beryl

Quartz (SiO₂), if citrine; beryl (Be₃Al₂Si₆O₁₈), if heliodor

Green cabochon gemstone pendant, likely turquoise or dyed green turquoise

Probably turquoise, CuAl₆(PO₄)₄(OH)₈·4H₂O; exact identification requires testing

Citrine

Citrine (Silicon Dioxide, SiO2)

Blue glass-like tumbled specimen

Most likely cobalt-blue slag glass or manufactured glass; not confidently identifiable as a natural mineral from the image

Red gemstone ring, likely synthetic ruby or garnet

Ruby: corundum (Al₂O₃); possible alternative: almandine garnet (Fe₃Al₂(SiO₄)₃)

Quartz (Smoky Quartz variant)

Silicon Dioxide (SiO2)

Diamond jewelry pendant or cluster

Diamond, crystalline carbon (C), likely mounted in metal

Diamond (or Diamond Simulant)

Carbon (C) or Cubic Zirconia (ZrO2)

Emerald (green gemstone in a jewelry setting)

Beryl, Be₃Al₂(SiO₃)₆; green color commonly from chromium and/or vanadium

Moonstone ring

Moonstone, a feldspar variety (typically orthoclase or adularia; KAlSi₃O₈)

Cubic Zirconia (Jewelry Setting)

Cubic Zirconia (ZrO2)

Diamond (or Diamond Simulant)

Native Carbon (C)

Blue faceted gemstone, likely synthetic sapphire or blue glass

Corundum (Al₂O₃) if sapphire; identity cannot be confirmed visually

Diamond

Carbon (C)

Rock Crystal (Clear Quartz)

Silicon dioxide (SiO2)

Pink Sapphire

Corundum (Al2O3 with trace Chromium and Iron)

Opalite

Man-made opalescent glass (SiO2 + metal oxides)

Diamond jewelry setting

Diamond (crystalline carbon, C) in a metal setting; the small stones’ identity is not visually confirmable

Diamond ring

Diamond, crystalline carbon (C), set in a gold-colored metal ring

Diamond (or Diamond Simulant)

Carbon (C)

Polished ruby cabochon (likely synthetic or treated)

Corundum, aluminum oxide (Al₂O₃), colored red by chromium

Cut gemstone ring, likely diamond

Diamond (carbon, C), faceted gemstone; exact stone identification is uncertain from the image

Red-orange cabochon, likely carnelian or glass imitation

Carnelian: chalcedony (microcrystalline SiO₂), commonly iron-colored

Ruby (varieties of Corundum)

Aluminum oxide (Al2O3) with Chromium traces

Ruby

Corundum (Al2O3 with Chromium)

Blue Goldstone

Synthetic Aventurescent Glass (Cobalt-doped soda-lime glass)

Smoky Quartz

Silicon Dioxide (SiO2)

Smoky Quartz

Silicon Dioxide (SiO2)

Ruby

Corundum (Al2O3 with Chromium traces)

Emerald

Beryl, Be₃Al₂(SiO₃)₆, colored green mainly by chromium and/or vanadium

Agate (Polished Sphere)

Silicon Dioxide (SiO2)

Polished blue stone, likely sodalite or dyed agate

Most consistent with sodalite (Na₈(Al₆Si₆O₂₄)Cl₂), though the image cannot confirm composition

Opal-like cabochon ring stone

Likely common opal (hydrated amorphous silica, SiO₂·nH₂O); exact material uncertain from the photograph

Man-made Metal Pin (Non-geological)

Antimony-Lead Alloy or Zinc/Brass Base with Electroplating

Shale with Vein Infillings

Shale (a fine-grained clastic sedimentary rock). The veins could be Calcite (CaCO3), Quartz (SiO2), or other minerals.

Likely diamond accent

Diamond (crystalline carbon, C)

Smoky Quartz

Smoky Quartz (Silicon Dioxide, SiO2)

Pearl and Garnet Glass

Calcium Carbonate (CaCO3) for pearl; Silicon Dioxide (SiO2) for glass

Smoky Quartz

Silicon Dioxide (SiO2)

Green beryl gemstone (likely emerald or green beryl)

Beryl, Be₃Al₂Si₆O₁₈; green color from chromium/vanadium or iron

Possible blue sapphire

Corundum (Al₂O₃), possibly blue sapphire