Sedimentary (Alluvial Deposit)

Gold Nugget

Native Gold (Au)

Nephrite Jade

Ca2(Mg, Fe)5Si8O22(OH)2

Diamond

Diamond (pure Carbon, C)

Sandstone

Arenite (primarily SiO2 with trace Fe2O3)

Fairburn Agate

Cryptocrystalline Quartz (SiO2)

Blue Sapphire

Corundum (Al2O3)

Rough Sapphire

Corundum (Al2O3)

Blue Topaz

Topaz [Al2SiO4(F,OH)2]

Sapphire

Corundum (Al2O3)

Nephrite Jade

Nephrite (Ca2(Mg, Fe)5Si8O22(OH)2)

Ruby

Corundum (Al2O3 with Chromium traces)

Diamond

Diamond (C)

White Agate (Chalcedony)

Silicon Dioxide (SiO2)

Rough Diamond

Diamond (pure Carbon, C)

Diamond

Diamond (pure Carbon, C)

Ruby

Corundum (Al2O3 with Chromium traces)

Diamond (in a jewelry setting)

Carbon (C)

Orange Quartzite / Carnelian Agate

Silicon Dioxide (SiO2)

Rough Diamond

Pure Carbon (C)

Diamond

C (Carbon)

Diamond (in a jewelry setting)

Carbon (C)

Rough Diamond

Diamond (pure carbon, C)

Gold

Gold (Native Element); Au

Blue Sapphire

Corundum (Al2O3 with trace amounts of iron and titanium)

Gold Nugget

Native Gold (Au)

Gold Nugget

Native Gold (Au)

Corundum (Ruby Variety)

Corundum (Al2O3)

Black Spinel

Magnesium Aluminum Oxide (MgAl2O4)

Rough Diamond

Diamond (Native Carbon, C)

Diamond

Native Carbon (C)

Peridot

Olivine ((Mg, Fe)2SiO4)

Diamond

Carbon (C)

Nephrite Jade

Tremolite-Actinolite solid solution Ca2(Mg,Fe)5Si8O22(OH)2

Diamond

Native Carbon (C)

Banded Chert / Banded Jasper (likely a variety of Chert/Chalcedony)

Chert (microcrystalline quartz)

Garnet (specifically Almandine or Pyrope)

Almandine: Fe3Al2(SiO4)3 or Pyrope: Mg3Al2(SiO4)3

Blue Sapphire

Corundum (Al2O3 with trace Titanium and Iron)

Gold

Gold (Native Au)

Gold Nugget

Native Gold (Au)

Chrysoberyl (Cyclic Twin)

Beryllium Aluminum Oxide (BeAl2O4)

Basalt River Pebble

Mafic volcanic rock (Basalt)

Raw Diamond

Diamond (C)