Anthropogenic (Man Made Industrial Byproduct)

Slag

Ferrous slag (by-product of iron smelting)

Bismuth

Bismuth (Bi)

Black beaded bracelet, likely black onyx or glass

Possibly chalcedony (microcrystalline quartz, SiO₂); the beads may instead be man-made glass

Diamond

Carbon (C)

Corundum (Ruby variety)

Aluminium oxide (Al2O3)

Cullet Glass (Industrial Slag Glass)

Amorphous Silica (SiO2) with metallic oxide impurities

Diamond Druzy (Crystalline Diamond)

Carbon (C)

Clear-stone silver-tone teardrop earring

The stones may be colorless quartz or glass; the image does not allow reliable identification. Metal setting appears silver-tone.

Diamond (as set in a gold ring)

Carbon (C)

Iron-rich vesicular rock, possibly slag or weathered basalt

Identification uncertain; likely ferruginous basalt/ironstone, with possible anthropogenic iron slag

Diamond (or Diamond Simulant)

Carbon (C) or Cubic Zirconia (ZrO2)

Ruby in Matrix

Corundum (Al2O3)

Red glassy cabochon, likely synthetic ruby or red glass

Uncertain; possible synthetic corundum (Al₂O₃, chromium-colored) or man-made glass

Tumbled opalite (likely synthetic glass)

Opalite; typically man-made opalescent soda-lime glass, not a recognized mineral species

Diamond

Native Carbon (C)

Diamond

Carbon (C)

Fossil shark tooth in sediment

Likely fossilized shark tooth, possibly *Carcharhinus* or *Otodus*; exact identification requires the tooth’s full morphology and locality

Diamond

Carbon (C)

Rough Diamond

Native Carbon (C)

Diamond

Carbon (C)

Diamond Plate (Steel)

Alloyed Carbon Steel or Aluminum with 'Durbar' pattern

Goldstone (Red/Brown)

Aventurine Glass (SiO2 with Copper inclusions)

Diamond (Cut and Polished)

Diamond (pure Carbon, C)

Brick

Fired clay or Ceramic material (no specific mineralogical scientific name as it's a composite)

Crushed Stone / Gravel

Aggregatus saxum (variable mineral composition)

Diamond (or Cubic Zirconia)

Carbon (C) or Zirconium Dioxide (ZrO2)

Tumbled blue-green stone, likely chrysocolla or dyed chalcedony

Probable chrysocolla (hydrated copper aluminosilicate; variable composition), though appearance could also represent dyed chalcedony

Polished blue stone, likely sodalite or dyed agate

Sodalite: Na₈(Al₆Si₆O₂₄)Cl₂; exact identification requires testing

Rough Sapphire (Corundum)

Corundum (Al2O3)

Asphalt (Bituminous Concrete)

Bituminous Concrete / Pavement

Mixed beach-stone and tumbled-glass collection

Predominantly uncertain rocks (likely basalt, granite, and quartz-bearing stones) with anthropogenic glass; one possible banded agate or jasper

Blue Goldstone

Aventurine Glass (Silicon Dioxide infused with Cobalt/Copper)

Fossilized gastropod (likely nerite or related sea snail)

Gastropoda; shell composed originally of aragonite/calcite, commonly replaced or infilled by calcite

Diamond

Diamond (pure native carbon, C)

Green sea glass or green glass-like tumbled material

Amorphous silicate glass; likely anthropogenic soda-lime glass, not a natural mineral

Fossil or modern bivalve shell

Calcium carbonate shell, likely aragonite (CaCO₃); exact species cannot be determined from the image

Green glassy slag (often sold as “sea glass” or “green obsidian”)

Industrial vitreous slag; primarily amorphous silicate glass, composition variable

Diamond

Diamond (pure Carbon, C)

Jewelry Chain with Blue and Clear Gemstones (Likely Cubic Zirconia)

Cubic Zirconia (ZrO₂), Silver or White Gold/Platinum Alloy

Artificial Rock Face (Faux Rock)

Glass Fiber Reinforced Concrete (GFRC)

Diamond

Diamond (pure Carbon, C)

Man-made Green Quartz (Lab-grown or Treated)

Silicon Dioxide (SiO2) with artificial coloration