Not A Natural Rock (Man Made Composite)

Blue crystal pendant (likely blue glass or synthetic crystal)

Not identifiable from the image; possibly synthetic quartz or glass, rather than a natural mineral

Seven Chakra Bonded Stone

Bonded composite of Red Jasper, Carnelian, Tiger's Eye, Aventurine, Lapis Lazuli, Amethyst, and Clear Quartz

Opalite

Synthetic Glass (Simulated Opal)

Opalite

Synthetic glass (SiO2 + impurities)

White pebble, likely quartz or calcite

Indeterminate from image; possible microcrystalline quartz (SiO₂) or calcite (CaCO₃)

Polished gemstone tower assortment

Primarily quartz varieties and simulants; apparent amethyst (SiO₂), rose quartz (SiO₂), clear quartz (SiO₂), fluorite (CaF₂), sodalite, malachite, and possibly dyed or composite stones

Cullet Glass (Slag Glass)

Amorphous Silicon Dioxide (SiO2) with metallic oxide impurities

Green sea glass (likely bottle glass)

Man-made soda-lime silicate glass; not a natural mineral

Blue Obsidian

Volcanic Glass (Silica, SiO2)

Rose Quartz and Cherry Quartz (Dyed Glass/Quartz)

Silicon Dioxide (SiO2) with inclusions/dye

Asphalt (Bituminous Pavement)

Bituminous mix (Aggregates with Bitumen binder)

Sea Glass

Man-made silicate glass

Tumbled milky quartz

Quartz (SiO₂), cryptocrystalline-to-massive variety

Sea Glass

Man-made silicate glass

Red glassy gemstone, possibly garnet

Unidentified red transparent material; garnet group (X₃Y₂(SiO₄)₃) is a possibility

Opaline Glass (Opalite)

Synthetic Silicon Dioxide Glass

Baked-clay ceramic fragment (likely brick or pottery)

Fired clay, primarily aluminosilicate minerals; not a natural rock

Goldstone (brown goldstone)

Man-made aventurine glass, typically copper-bearing silica glass

Cubic Zirconia (Jewelry Setting)

Zirconium Dioxide (ZrO2)

Blue-green faceted gemstone, possibly glass or synthetic material

Not identifiable from the image; possible synthetic spinel or glass

Mother of Pearl (Nacre) / Shell Fragment

Biogenic Calcium Carbonate (Aragonite and Conchiolin)

Opalite

Synthetic Opalised Glass

Asphalt Chunk

Asphalt concrete

Blue Goldstone

Man-made glass infused with copper crystals

Opalite (Man-made Glass)

Fused glass (typically made of dolomite and metal opacifiers)

Opalite

Synthetic Glass (Silica-based)

Green sea glass (likely slag glass or bottle glass)

Man-made soda-lime silicate glass; not a naturally occurring mineral

Tumbled clear quartz (rock crystal)

Quartz, silicon dioxide (SiO₂)

Not a geological specimen

N/A (man-made object)

Painted River Rock

Artificially Coated Sedimentary Rock

Red goldstone beads

Goldstone (man-made copper-bearing glass; not a natural mineral)

Sea Glass

Man-made silicate glass

Crescent Pebble

Weathered Quartzite or Sandstone Fragment

Carved opalite pendant

Opalite (man-made opalescent glass; not a natural mineral)

Sandstone (with Liesegang rings or joints)

Clastic Sedimentary Rock (primarily Quartz with Iron Oxide cement)

Opalite

Synthetic glass / Opaque silicious glass

Faceted clear gemstone in a gold-colored setting

Unidentified transparent faceted stone; possibly quartz, glass, or another colorless gem

Man-made Polished Porcelain Tile (Artificial Geologic Lookalike)

Fused Silicate Ceramic with Alumina (Synthetic Kaolinite derivative)

Obsidian

Volcanic Glass

Goldstone

Aventurine Glass (Man-made)

Opalite

Synthetic Opalite Glass

Mystic Topaz (Treated Quartz or Topaz)

Aluminum silicate fluoride hydroxide [Al2SiO4(F,OH)2] with thin-film metallic coating