Mineraloid (Synthetic)

Green Slag

Anthropogenic Silicate Glass

Iron Slag

Ferrous Slag (Industrial Byproduct)

Slag (Industrial Glass Slag)

Amorphous Silicate Glass (often containing Al, Ca, Mg, and Ti oxides)

Shell Cameo

Cypraecassis rufa (Bullmouth Queen Helmet Shell)

Ferruginous Slag (Iron Smelting Byproduct)

Anthropogenic Vitreous Silicate (often containing Fayalite: Fe2SiO4)

Slag (Industrial Glass/Metal Waste)

Artificial silicate/ferro-silicate byproduct

Amber

Succinicum (Organic compound, primarily C10H16O)

Lapis Lazuli

A metamorphic rock primarily composed of lazurite (Na,Ca)8[(S,SO4,Cl)2|(Al6Si6O24)], calcite (CaCO3), and pyrite (FeS2).

Black Tourmaline (Schorl)

Schorl (Na(Fe²⁺)₃Al₆(BO₃)₃Si₆O₁₈(OH)₄)

Amber (and Citrine Quartz)

Succinite (Amber) and Silicon Dioxide (SiO2)

Tektite (Indochinite)

Tektite (High-silica natural glass)

Tektite (specifically Indochinite)

Tektite (Natural silica glass)

Cat's Eye Shell (Shiva Shell)

Operculum of the Turbo petholatus (Tapestry Turban Snail), predominantly Calcium Carbonate (Aragonite)

Cobalt Blue Sea Glass

Amorphous Silica Glass (SiO2 + CoO)

Amber

Succinite (specifically for Baltic amber); Approximate formula: C10H16O

Ferruginous Slag (Iron Smelting Byproduct)

Fused Silicate Scoria (Amorphous mixture of FeO, SiO2, and CaO)

Red Jasper

Jasper (a variety of Chalcedony, SiO₂)

Amber

Succinite (Resinite)

Green Glass Slag

Amorphous Silicon Dioxide (SiO2) with metal oxide impurities

Baltic Amber (Butterscotch variety)

Succinite

Red Slag Glass

Amorphous Silica (Industrial byproduct with metallic oxide dopants)

Cullet Glass (sometimes mistaken for Blue Obsidian or Slag)

Amorphous Silicon Dioxide (SiO2) with chemical additives (e.g., Cobalt for blue color)

Glass Nugget (Tumbled Glass)

Amorphous Silicon Dioxide (SiO2) with additives

Baltic Amber (Butterscotch or Egg Yolk Variety)

Succinite (C10H16O)

Green Slag Glass

Amorphous Silica / Glassy Blast Furnace Slag

Moonstone

Orthoclase Feldspar (KAlSi3O8)

Sapphire

Corundum (Al₂O₃) with trace elements causing color variations.

Apatite

Apatite group mineral (e.g., Fluorapatite - Ca5(PO4)3F, Chlorapatite - Ca5(PO4)3Cl, Hydroxylapatite - Ca5(PO4)3(OH))

Prehnite

Prehnite, Ca2Al2Si3O10(OH)2

Aquamarine

Beryl (Be3Al2Si6O18), specifically the blue-green variety

Sodalite

Sodalite (Na4Al3Si3O12Cl)

Rutilated Quartz

Quartz (SiO2) with Rutile inclusions (TiO2)

Magnetic Hematite

Magnetized Hematite (an iron oxide mineral, Fe2O3, that has undergone magnetization)

Pearl-and-gemstone insect brooch

Pearl: nacre (aragonite, CaCO₃); colored stones are likely synthetic or natural corundum/spinel/glass, not determinable from the image

Emerald

Beryl (variety Emerald), Be3Al2Si6O18 with Cr and/or V

Diamond

Diamond (pure carbon; C)

Shale with Vein Infillings

Shale (a fine-grained clastic sedimentary rock). The veins could be Calcite (CaCO3), Quartz (SiO2), or other minerals.

N/A - Image is non-geological

Acrylonitrile Butadiene Styrene (ABS) or Polypropylene (PP)

Man-made earbud charging case (Not a rock or mineral)

Acrylonitrile Butadiene Styrene (ABS) Plastic with electronic components

Blue Goldstone

Aventurine Glass (Silicon Dioxide infused with Cobalt/Copper)

3D Printed PLA Elephant (Silk Multi-color)

Polylactic Acid (C3H4O2)n

Portable Ceramic Space Heater

Polished Acrylonitrile Butadiene Styrene (ABS) Plastic with Ceramic Heating Elements