Man Made Silicate (Anthropogenic Glass)

Metal Alloy (Likely Pewter or Sterling Silver)

Not a natural geological specimen; composed of refined metals. If pewter, it's a tin-based alloy. If sterling silver, it's 92.5% silver and 7.5% other metals (usually copper).

Aura Quartz

Titanium/Titanium-Gold treated Silicon Dioxide (SiO2)

Possible tektite or volcanic glass specimen

Natural silica glass; composition commonly near SiO₂, but exact identification requires chemical testing

Granite with Cupules / Bedrock Mortars

Granite (felsic intrusive plutonic rock)

Blue goldstone beads

Man-made aventurine glass (silica glass with metallic copper inclusions), not natural lapis lazuli

Diorite

Intermediate plutonic igneous rock

Iron Slag

Anthropogenic pyrometallurgical byproduct

Green Banded Chert (Agate/Jasper)

Silicon Dioxide (SiO2) with trace impurities of Chlorite or Glauconite

Blue Crackle Quartz (Dyed Quarzite)

Silicon Dioxide (SiO2) with artificial dye

Dyed Blue Agate (Dragon Vein Agate)

Silicon Dioxide (SiO2) with artificial cobalt/organic dyes

Diamond

Native Carbon (C)

Dyed Aura Quartz

Silicon Dioxide (SiO2) with metallic coating

Sea Glass (Kelly Green)

Amorphous Silica (Silicon Dioxide with Iron/Chromium additives)

Ferro-Manganese Slag

Vitreous Silicate Slag

Porcelain Tile (Sandstone-look)

Man-made Ceramic (resembling Quartz-rich Sandstone)

Carborundum (Silicon Carbide)

Silicon Carbide (SiC) / Moissanite (natural form)

Hematite

Iron(III) oxide (Fe2O3)

Metallic sulfide mineral fragment, likely galena

Galena (lead sulfide, PbS), tentative identification

Goldstone

N/A (Synthetic Glass with Copper Inclusions)

Sandstone (with man-made markings)

Arenite (composed primarily of Quartz, SiO2)

Pallasite Meteorite

Pallasite (Stony-Iron Meteorite)

Chert (Arrowhead/Projectile Point)

Chert (Cryptocrystalline Quartz, SiO2)

Cubic Zirconia (Man-made)

Cubic Zirconia (ZrO2) with Enamel and Metal Alloy

Chert (Arrowhead/Projectile Point)

Microcrystalline quartz (SiO2)

Leland Blue Stone

Anthropogenic Iron Smelting Slag

Polished blue calcite sphere (tentative identification)

Calcite, CaCO₃; blue color generally results from trace impurities or inclusions

Asphalt Chunk

Asphalt concrete

White Marble

Recrystallized Calcite Rock (CaCO3)

Amazonite

KAlSi3O8 (Potassium Aluminum Silicate)

Slag

Ferrous Slag (Siliceous industrial waste)

Polished blue-green glassy slag or coated mineral fragment

Most likely man-made colored glass/slag; exact composition cannot be determined visually

Chert (often called Flint)

Chert (Microcrystalline Quartz, SiO2)

Note: This is a Man-Made Object (Costume/Prop Patch)

Synthetic fiber and pigments (Cellulose/Plastic-based composite)

Man-made Synthetic Material (Plastic/Composite)

Acrylonitrile Butadiene Styrene (ABS) or High-Impact Polystyrene (HIPS)

Iron Slag

Iron smelting byproduct (Glassy/vesicular silicate)

Clay Brick

Ceramic structural unit (Al2O3·2SiO2·2H2O as precursor)

Dyed Crackle Quartz

Silicon Dioxide (SiO2) with synthetic dye

Dyed Dragon Vein Agate

Silicon Dioxide (SiO2) with artificial pigment

Green Agate

Silicon dioxide (SiO₂)

Blue Goldstone

Aventurine Glass (SiO2 with Cobalt/Copper inclusions)

Chert (Arrowhead variety)

Chert (SiO2)

Possible weathered basalt or slag fragment

Basalt, chiefly plagioclase and pyroxene; identification is uncertain from the image