Gemstone

Cubic Zirconia (CZ)

Zirconium dioxide (ZrO2)

Sunstone

Plagioclase Feldspar (containing (Ca,Na)(Al,Si)4O8 with Hematite or Copper inclusions)

Faceted peridot

Olivine, typically the forsterite–fayalite series; (Mg,Fe)₂SiO₄

Red garnet (possible almandine or pyrope), cut/polished

Garnet-group silicate; likely almandine, Fe₃Al₂(SiO₄)₃, or pyrope, Mg₃Al₂(SiO₄)₃

Red cabochon gemstone, likely carnelian

Carnelian: orange-red chalcedony, microcrystalline quartz (SiO₂)

Champagne topaz (likely)

Topaz, Al₂SiO₄(F,OH)₂

Rough Emerald

Beryl (Be3Al2Si6O18 with Chromium/Vanadium impurities)

Quartz

Silicon Dioxide (SiO2)

Peridot

Olivine (Mg, Fe)₂SiO₄

Diamond-encrusted microphone-shaped pendant

Diamond (natural or synthetic) set in gold-colored metal; exact stones and metal cannot be confirmed visually

Pink tourmaline (rubellite)

Elbaite tourmaline, lithium sodium aluminum borosilicate: Na(Li1.5Al1.5)Al6(BO3)3Si6O18(OH)4

Tumbled orange chalcedony or carnelian

Microcrystalline quartz (SiO₂), likely iron-bearing chalcedony

Pearl

Calcium carbonate with conchiolin (CaCO3)

Small faceted dark gemstone, possibly spinel or sapphire

Uncertain; candidates include MgAl₂O₄ spinel or corundum (Al₂O₃) sapphire

Small blue cut gemstone, possibly synthetic spinel or glass; species cannot be determined from the photo

Undetermined; blue synthetic spinel (MgAl₂O₄) is one possibility

Clear faceted gemstone, likely quartz (rock crystal)

Quartz, silicon dioxide (SiO₂); visual identification is uncertain because the stone is heavily faceted and photographed with flash

Red coral earrings

Corallium rubrum or related precious coral (calcareous coral skeleton; primarily aragonite, CaCO₃)

Diamond ring

Diamond, crystalline carbon (C), set in a likely precious-metal ring

Amethyst gemstone ring

Quartz, purple variety — SiO₂

Turquoise

CuAl6(PO4)4(OH)8·4H2O

White Precious Opal

Hydrated Silica (SiO2·nH2O)

Turquoise

Turquoise (Hydrated phosphate of copper and aluminium) CuAl6(PO4)4(OH)8·4H2O

Opal

Hydrated amorphous silica (SiO2·nH2O)

Quartz

Silicon Dioxide (SiO2)

Sodalite

Sodalite (Na8Al6Si6O24Cl2)

Quartz

Silicon Dioxide (SiO2)

Smoky Quartz

Silicon Dioxide (SiO2)

Tiger Iron

Mixed Quartz, Hematite, and Tiger's Eye

Quartz

Silicon Dioxide (SiO2)

Fluorite

Calcium Fluoride (CaF2)

Jasper

Microcrystalline Quartz (SiO2)

White Quartz

Silicon Dioxide (SiO2)

Chalcedony Geode

Silicon Dioxide (SiO2)

Rose Quartz

Silicon Dioxide (SiO2)

Opal

SiO2·nH2O

Opal

Hydrated amorphous silica (SiO2·nH2O)

Pegmatite Granite

Intrusive Igneous Rock

Quartz

Silicon Dioxide (SiO2)

White Quartz

Silicon Dioxide (SiO2)

Quartz

Silicon Dioxide (SiO2)

Quartz crystal, likely iron-stained quartz

Quartz (SiO₂)

Likely rough garnet crystal

Garnet group, possibly almandine (Fe₃Al₂(SiO₄)₃)