Organic (If Resin) Or Synthetic (If Glass); Simulating Sedimentary Or Metamorphic (For Natural Stones)

Polished red jasper mushroom carving

Jasper, microcrystalline quartz (SiO₂), colored chiefly by iron oxides

Clear faceted gemstone in an ornate metal bracelet

Unidentified transparent faceted stone; possibilities include quartz (SiO₂), zircon (ZrSiO₄), or glass—image alone cannot distinguish them

Tumbled hematite

Hematite (Fe₂O₃), commonly sold as “magnetic hematite” when synthetic or magnetized

Amethyst (Tumbled)

Silicon Dioxide (SiO2) with Fe3+ impurities

Amethyst (faceted gemstone)

Quartz, silicon dioxide (SiO₂), purple variety colored mainly by iron-related defects

Red corundum (ruby) crystal fragment

Corundum, Al₂O₃; ruby is red corundum colored mainly by chromium

Ruby / Red Tourmaline

Corundum (Al2O3) or Elbaite (Na(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)4)

Polished amber-colored translucent stone, likely citrine or yellow chalcedony

Most consistent with quartz (SiO₂), potentially citrine; translucent yellow chalcedony is another possibility

Amber

Succinite (Fossilized Resin)

Black onyx or black obsidian bead bracelet

Likely chalcedony (microcrystalline quartz, SiO₂) if onyx; alternatively volcanic glass (obsidian)

Smoky Quartz

Silicon Dioxide (SiO2)

Opal stud earrings

Opal, hydrated amorphous silica (SiO₂·nH₂O)

Chert

Microcrystalline Quartz (SiO2)

Citrine

Citrine (Silicon Dioxide, SiO2)

Quartzite (or Engineered Quartz Stone)

SiO2 (Silicon Dioxide)

Ruby (set in a ring; possibly synthetic or imitation)

Corundum, Al₂O₃; red color is typically caused by chromium

Strawberry Quartz

Silicon Dioxide with Hematite inclusions (SiO2 + Fe2O3)

Orange mineral fragment, possibly citrine or iron-stained quartz

Quartz (SiO₂), tentatively iron-included quartz/citrine

Heart-shaped faceted gemstone pendant

Likely yellow quartz (citrine) or synthetic yellow stone, set in metal with small clear accent stones

Blue stone cabochon, likely lapis lazuli or dyed stone

Lapis lazuli: lazurite-rich rock, chiefly (Na,Ca)₈(AlSiO₄)₆(S,SO)₂; exact identification is uncertain from the image

Goldstone

Aventurine Glass (SiO2 + Cu small inclusions)

Amber

Succinite (with approximate formula C10H16O)

Gemstone butterfly brooch/pendant

Likely faceted pink tourmaline or synthetic spinel in gilt metal; exact identification requires testing

Clear faceted gemstone, likely cubic zirconia

Synthetic zirconium dioxide (ZrO₂), probably cubic zirconia; exact identification requires testing

Smoky Quartz

Silicon Dioxide (SiO2)

Red faceted gemstone, likely synthetic ruby

Corundum (Al₂O₃); ruby is red chromium-bearing corundum

Gemstone jewelry ensemble

Likely mixed gemstone and glass-bead jewelry; exact stones cannot be determined from the image

Ruby (faceted gemstone in a ring)

Corundum, Al₂O₃; red color typically from trace chromium

Opalite-style glass pendant

Man-made opalescent glass (not natural opal)

Clear quartz crystal sphere

Quartz (silicon dioxide, SiO₂)

Amber

Succinite (specifically for Baltic amber); chemical formula approximately C10H16O

Cut red gemstone, likely ruby

Ruby, gem-quality corundum (Al₂O₃) colored by chromium

Polished amber-colored stone, possibly chert or jasper

Uncertain from image; likely microcrystalline quartz (SiO₂) if chert/jasper

Blue-violet faceted gemstone, likely amethyst

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

Amber (possibly polished or rough amber)

Natural fossil resin; not a mineral, with variable organic composition dominated by polymerized terpenes

Smoky Quartz

Silicon Dioxide (SiO2)

Polished tiger iron

Tiger iron, a banded aggregate of tiger’s-eye (quartz), red jasper, and hematite/magnetite

Colorless faceted gemstone (most likely synthetic cubic zirconia)

Cubic zirconia, ZrO₂ (likely synthetic); natural alternatives include quartz or diamond

Hematite

Hematite (Fe₂O₃), likely a polished specular hematite palm stone

Tumbled opalite (likely man-made glass)

Opalite glass; a synthetic opalescent glass, not a natural mineral species

Carved Mottled Greenish-Yellow Crystal/Glass Object

Unknown; possibly a form of quartz (chalcedony/jadeite/nephrite) or glass/resin.

Smoky Quartz

Silicon Dioxide (SiO2)