Man Made Material, Not A Natural Rock Or Mineral Specimen

Synthetic Resin / Plastic Figurine

Synthetic Polymer (Copolymer of Polyethylene or Resin)

Titanium Aura Quartz

Silicon Dioxide (SiO2) coated with Titanium and Niobium

Man-made Synthetic Material (Not a rock or mineral)

Polyester (Polyethylene terephthalate) / Faux Fur

Aqua Aura Quartz

Titanium/Gold-coated Silicon Dioxide (SiO2)

Chert (Arrowheads)

Microcrystalline Quartz (SiO2)

Opalite

Synthetically produced glass (Silicon Dioxide with metallic inclusions)

Dyed Imperial Jasper (Sea Sediment Jasper)

Silicon Dioxide (SiO2) - Impure Quartz/Chalcedony

Cullet Glass (Slag Glass)

Amorphous Silicon Dioxide (Industrial byproduct)

Opalite (likely man-made opalescent glass)

Opalite; not a true mineral, typically synthetic opalescent glass (silica-based)

Engineerged Quartz (Quartz Composite)

SiO2 (Silicon Dioxide) in a polymer resin matrix

Red Slag Glass

Amorphous Silica (Industrial byproduct with metallic oxide dopants)

Tumbled quartz pebble

Quartz, silicon dioxide (SiO₂), likely milky quartz

Man-made Slag (Industrial Byproduct)

Anthropogenic Glassy Residue

Concrete with Aggregate

Composite construction material; primary matrix is Calcium Silicate Hydrate (C-S-H)

Exposed aggregate concrete (stone-chip surface)

Portland-cement concrete containing natural aggregate; not a natural rock

Sea Glass

Man-made silicate glass

Titanium Coated Kyanite (Aura Kyanite)

Aluminosilicate (Al2SiO5) with a Titanium-Niobium vacuum-deposited coating

Tumbled Clear Quartz/Rock Crystal

Silicon Dioxide (SiO2)

Green sea glass or tumbled green quartz (uncertain)

Likely quartz (SiO₂) if natural; alternatively man-made soda-lime glass

Slag

Metallurgical by-product

Carborundum (Silicon Carbide)

Silicon Carbide (SiC) / Moissanite (natural form)

Tumbled gray stone, likely quartz-rich pebble

Probable microcrystalline quartz/chalcedony (SiO₂), possibly gray jasper or quartzite

Opalite Egg

Synthetic Glass (Simulated Opal)

Man-made Carved Stone (Scream Mask/Skull motif)

Carved Soapstone or Serpentine-rich rock

Glass

Amorphous Silicon Dioxide (SiO2)

Dyed Aura Quartz

Silicon Dioxide (SiO2) with metallic coating

Cherry Quartz

SiO2 (Silicon Dioxide with iron-rich inclusions/dye)

Rock crystal quartz fragments

Quartz (silicon dioxide, SiO₂)

Blue slag glass or dyed glass-like industrial material

Amorphous silicate glass; likely copper-bearing blue slag, but possibly colored man-made glass

Opalite

Synthetic Glass (Silica-based)

Diamond (as set in a metal alloy ring)

Diamond (Pure Carbon, C)

Blue glass-like tumbled specimen

Most likely cobalt-blue slag glass or manufactured glass; not confidently identifiable as a natural mineral from the image

Carved Mottled Greenish-Yellow Crystal/Glass Object

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

Sea Glass

Man-made vitreous material

Silicon Carbide (Carborundum)

Silicon Carbide (SiC) / Moissanite (natural)

Slag

Glassy silicate byproduct (anthropogenic material)

Green glass-like mineral specimen, likely fluorite

Fluorite (calcium fluoride, CaF₂), if natural; appearance may also indicate colored glass

Chakra Stone Tower (Composite Multi-Mineral)

Crystalline Silicon Dioxide composite (SiO2) with various inclusions

Carved Stone Turtle

Carved Soapstone and Quartz

Tumbled milky chalcedony (likely common opalite-like quartz)

Chalcedony, microcrystalline SiO₂; possibly pale common opal, hydrated SiO₂·nH₂O

Concrete-like aggregate surface with embedded rock fragments

Anthropogenic concrete or exposed aggregate; not a natural rock specimen

Sea Glass

Amorphous silicon dioxide (man-made glass weathered by nature)