Mineraloid (Synthetic)

Dyed Agate

Silicon Dioxide (SiO2) with synthetic dyes

Blue Goldstone

Synthetic glass with cobalt and copper inclusions

Blue Goldstone

Synthetic Avanturine Glass (or Aventurine Glass)

Lava Stone and Chakra Beads

Basalt (with various mineral/synthetic beads)

Blue Cracked Quartz (Dyed Fire Crackle Quartz)

Silicon Dioxide (SiO2) with synthetic dye

Diamond (or Diamond Simulant)

Carbon (C)

Red faceted gemstone jewelry setting

Likely synthetic ruby or red spinel centerpiece with colorless accent stones; exact identification requires gemological testing

Obsidian

Obsidian

Ruby

Corundum (Al2O3 with Chromium traces)

Ruby (Pink to Red Corundum)

Al2O3 (Corundum with Chromium impurities)

Tumbled Clear Quartz and Citrine Points

Silicon Dioxide (SiO2)

Blue Sapphire

Corundum (Al2O3)

Ruby (Corundum)

Corundum (Aluminum Oxide with Chromium), Al2O3:Cr

Coal (Anthracite/Bituminous)

Carbo fossilium (primarily Carbon)

Diamond (or Cubic Zirconia simulant)

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

Blue Sapphire

Corundum (Al2O3 with trace Titanium and Iron)

Sandstone (likely Fossilized Wood or Concrete Simulacrum)

Arenite / Silicified Wood / Anthropogenic Concrete

Amethyst (Resin Carving/Orgonite)

Silicon Dioxide (SiO2) with iron impurities

Cubic Zirconia (Man-made)

Cubic Zirconia (ZrO2) with Enamel and Metal Alloy

Painted River Rock

Anthropogenic-modified Siliciclastic Sedimentary Rock

Dyed Agate

Chalcedony (SiO2)

Green Obsidian Sphere (man-made glass)

Vitreous Silica with Chromium/Iron additives

Tumbled amethyst

Amethyst, purple quartz (SiO₂), colored by trace iron and irradiation

Tumbled amethyst

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

Emerald

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

Garden Quartz (Lodalite)

Silicon Dioxide with various mineral inclusions (SiO2)

Green cabochon gemstone, likely aventurine or dyed chalcedony

Indeterminate from image; possible quartz variety (SiO₂), including aventurine quartz or chalcedony

Opalite

Synthetic Opalized Glass / Man-made Glass

Blue Goldstone

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

Ammolite

Biogenic gemstone (Aragonite, CaCO3)

Assorted Semi-Precious Gemstone Crosses

Quartz, Silicates, Carbonates (various)

Quartz (Smoky Quartz variant)

Silicon Dioxide (SiO2)

Bumblebee Jasper

Calcite with Arsenic and Sulfur inclusions

Obsidian

Obsidian (Volcanic Glass)

Obsidian (Gold Sheen)

Obsidian (SiO2 + impurities)

Mahogany Obsidian

Volcanic Glass (SiO2 + Fe2O3)

Mahogany Obsidian

Volcanic glass containing Hematite or Magnetite (SiO2 + Fe2O3)

Obsidian

Volcanic Glass (SiO2 + impurities)

Snowflake Obsidian

Volcanic Glass (SiO2) with Cristobalite inclusions

Obsidian

Volcanic Glass (Silica / SiO2)

Mahogany Obsidian

Volcanic glass (Silicon Dioxide with Hematite/Magnetite inclusions)

Obsidian

Obsidian (Volcanic Glass)