Synthetic (Glass)

Tumbled tiger’s-eye

Quartz variety, fibrous golden-brown SiO₂ (pseudomorphic quartz after crocidolite)

Black spinel bead strand

Spinel, magnesium aluminum oxide (MgAl₂O₄)

Colorless faceted gemstone, likely glass or cubic zirconia

Uncertain; possible cubic zirconia (zirconium dioxide, ZrO₂) or synthetic glass

Red glass-like crystal, likely synthetic ruby or red glass

Uncertain from image; possible corundum (ruby), Al₂O₃, or synthetic glass

Polished pink quartz cabochon

Quartz (SiO₂), likely rose quartz or included quartz

Blue Goldstone

Aventurine Glass (SiO2 with Co and metallic inclusions)

Yellow faceted gemstone, likely citrine or synthetic glass

Citrine (quartz, SiO₂) is the leading natural possibility; visual identification is uncertain from the photograph

Strawberry Quartz (or Rose Quartz / Cherry Quartz)

Silicon Dioxide (SiO2) with Lepidocrocite, Hematite, or Goethite inclusions

Carved labradorite fish

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

Blue cabochon gemstone, likely synthetic glass or dyed stone

Indeterminate from image; possible glass, synthetic spinel, sodalite, or lapis lazuli

Green glass-like cabochon, likely synthetic glass or resin

Unidentified green transparent material; possibly molded glass, synthetic spinel, or resin

Tiger’s eye

Quartz (SiO₂), fibrous pseudomorph after crocidolite

Garden Quartz (Lodalite)

Silicon Dioxide with various mineral inclusions (SiO2)

Opalite-style pendant (likely synthetic glass, not natural opal)

Opalescent glass; commonly sold as “opalite” (not a recognized mineral species)

Slag Glass (Cullet)

Amorphous Silica (man-made), primarily SiO2 with trace metal oxides

Opalite

Synthetic Fluorescent Glass (SiO2 + impurities)

Faceted yellow gemstone, likely citrine

Citrine (quartz), SiO₂; possibly yellow sapphire or synthetic glass without testing

Tumbled labradorite beads

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

Green iridescent glass cabochon or synthetic gemstone

Likely synthetic glass; possibly coated synthetic quartz or lab-created green gemstone

Blue cabochon gemstone ring

Uncertain; likely blue sapphire (corundum, Al₂O₃), blue topaz, or synthetic glass/spinel

Blue glass-like gemstone specimen (likely dyed or synthetic quartz)

Uncertain; possibly blue-dyed quartz or synthetic glass, not confidently identifiable from the image

Faceted glass-like gemstone object

Likely synthetic glass or cubic zirconia; exact material cannot be confirmed from the image

Banded Black Onyx (Chalcedony)

Silicon Dioxide (SiO₂)

Polished labradorite cabochon

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

Blue glassy cabochon, likely blue quartz or synthetic glass

Possibly dyed blue chalcedony/quartz (SiO₂); visual identification is inconclusive

Opalite (likely man-made glass)

Opalite; amorphous silica glass, not a natural mineral

Labradorite cabochon

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

Tiger’s-eye

Chatoyant quartz (SiO₂), commonly pseudomorphic quartz after crocidolite

Faceted purple-blue beads, likely synthetic glass or treated gemstone

Indeterminate; possible synthetic corundum, synthetic spinel, or dyed quartz (SiO₂)

Green faceted gemstone, likely synthetic glass or chrome-dyed stone

Undetermined; possibilities include green tourmaline, synthetic emerald, glass, or dyed quartz

Colorless faceted gemstone (likely cubic zirconia)

Cubic zirconia, ZrO₂ (synthetic zirconium dioxide); possibly synthetic glass or lab-grown diamond

Faceted yellow-green gemstone, likely peridot

Olivine, typically forsterite-rich (Mg₂SiO₄)

Mixed gemstone jewelry collection

Various gemstone minerals, including likely amethyst (quartz), sapphire or iolite, garnet, pearl, turquoise, and colored beryl or tourmaline

Faceted yellow-brown gemstone earring

Likely citrine (quartz, SiO₂), though treated quartz or synthetic glass cannot be confirmed from the image

Clear faceted quartz-like gemstone

Probably rock crystal quartz (SiO₂), though the image may show synthetic glass or cubic zirconia

Goldstone (Red)

Aventurine Glass (Cupriferous glass)

Tumbled blue glass-like specimen, possibly dyed chalcedony or synthetic glass

Uncertain; possible dyed quartz/chalcedony (SiO₂), but appearance strongly suggests cobalt-blue glass

Faceted colorless gemstone, likely quartz (rock crystal) or synthetic glass imitation

Quartz: silicon dioxide (SiO₂), trigonal crystal system; exact identity cannot be confirmed visually

Cut colorless gemstone, likely quartz or glass imitation

Most plausibly rock crystal (clear quartz, SiO₂); synthetic glass cannot be ruled out from the image

Blue glassy mineral fragment, possibly dyed/cobalt-colored calcite or aragonite

Uncertain from image; vivid blue coloration may indicate treated calcite (CaCO₃), aragonite (CaCO₃), or synthetic glass

Rough Diamond (Uncut Diamond)

Native Carbon (C)

Green gemstone ring, likely emerald simulant or jade

Uncertain; possible beryl (emerald, Be₃Al₂Si₆O₁₈) or jadeite (NaAlSi₂O₆), but the blurred image may show synthetic glass or another treated stone