Sedimentary (Alluvial Deposit)

Chert (Jasper variety)

Silicon dioxide (SiO2)

Conglomerate

Conglomerate (Detrital sedimentary rock)

Jasper

Microcrystalline Quartz (SiO2)

Conglomerate

Polymictic conglomerate; clast-bearing sedimentary rock cemented by silica, calcite, or iron oxides

Gold Nugget

Gold (Au)

Rough Corundum (likely Sapphire/Zircon-bearing)

Aluminium Oxide (Al2O3)

Ruby

Corundum (Al2O3 with Chromium trace elements)

Puddingstone / polymictic conglomerate

Polymictic conglomerate, chiefly quartz, feldspar, and lithic clasts in a silica-rich or carbonate cement

Burmese Jadeite

Jadeite (NaAlSi2O6)

Diamond

Carbon (C)

Quartzite Pebble

Metamorphic Quartzite

Rough Diamond

Diamond (pure Carbon, C)

Diamond

Carbon (C)

Rough Diamond

Carbon (C)

Diamond

Native Carbon (C)

Diamond

Carbon (C)

Jadeite (Jade)

Jadeite (NaAlSi2O6)

Diamond

Diamond (C)

Raw Corundum (Sapphire/Ruby variant)

Aluminum oxide (Al2O3)

Rough Diamond

Carbon (C)

Diamond (in Jewelry Setting)

Carbon (C) - Isometric-Hexoctahedral

Diamond (or Lab-Grown Cubic Zirconia)

Carbon (C)

Diamond

Native Carbon (C)

Diamond (set in a gold ring)

Carbon (C) - Adamantine cubic carbon

Quartzite Pebble

Quartzite (primarily SiO2)

Diamond

Diamond (C)

Tumbled jasper pebble

Jasper, microcrystalline quartz (SiO₂) with iron-oxide impurities

Amber (possibly a small polished amber cabochon)

Fossilized tree resin; amber is an organic gemstone, not a mineral

Conglomerate

Conglomerate (clastic sedimentary rock)

Diamond (Heart Cut)

Carbon (C)

Diamond

Natural Diamond (Carbon, C)

White quartz pebble

Quartz (silicon dioxide, SiO₂), likely milky quartz

Diamond

Carbon (C)

Diamond

Carbon (C)

Diamond

Diamond (C)

Rough Diamond

Diamond (pure Carbon, C)

Petrified Wood

Silicified wood (Quartz replacement, SiO2)

Diamond

Carbon (C)

Diamond

Diamond (Pure Carbon, C)

Raw Diamond

Carbon (C)

Diamond

Carbon (C)

Diamond

Carbon (C)