Synthetic Or Natural Fiber

Citrine Quartz

Silicon Dioxide (SiO2)

Citrine or Yellow Quartz

Silicon Dioxide (SiO2) with iron impurities

Ferruginous Quartz

Silicon Dioxide (SiO2) with iron oxide inclusions (Limonite/Goethite)

Citrine

Silicon Dioxide (SiO2) with iron impurities

Diamond

Carbon (C)

Gold and Diamond

Native Gold (Au) and Diamond (C)

River Cobble (Quartzite)

Meta-orthoquartzite

Orange Quartz (Citrine or Iron-stained Quartz)

Silicon Dioxide (SiO2)

Silver (Morgan Dollar)

Native Silver (Ag) - 90% Silver, 10% Copper alloy

Hag Stone (Banded Chert or Limestone with Borehole)

Microcrystalline Quartz (Chert) or Calciferous Siltstone (CaCO3/SiO2)

Sandstone

Arenite (SiO2 primarily)

Yellow Ochre / Limonite

Hydrated Iron(III) Oxide-Hydroxide (FeO(OH)·nH2O)

Sandstone

Arenite

Smoky Quartz

Silicon Dioxide (SiO2)

Turquenite (Dyed Howlite)

Dyed Ca2B5SiO9(OH)5 (Calcium Borosilicate Hydroxide)

Red Jasper (Brecciated Jasper)

SiO2 (Silicon Dioxide) with Ferric Iron inclusions

Blue Sapphire

Corundum (Al2O3)

Amethyst

Silicon Dioxide with Iron impurities (SiO2)

Smoky Quartz (with possible Feldspar inclusions)

Silicon Dioxide (SiO2)

Sandstone (with potential Quartzite characteristics)

Clastic sedimentary rock (primarily SiO2)

Blue Banded Agate (Dyed)

Silicon Dioxide (SiO2) - Chalcedony variety

Lapis Lazuli (Simulated)

Lapis Lazuli (Na,Ca)8(AlSiO4)6(S,Cl,SO4,OH)2

Amethyst (Pale/Light Variety)

Quartz (Silicon Dioxide) with Iron impurities - SiO2

Shale

Fissile Mudstone (primarily composed of phyllosilicate minerals like kaolinite, montmorillonite, and illite)

Moqui Marble

Ironstone Concretion (Goethite/Hematite shell with Sandstone core)

White Moonstone (Scolicite or White Feldspar var. )

Lattice-structure Silicate (KAlSi3O8)

Diamond

Diamond (pure Carbon, C)

Green Banded Agate

Agate (Variety of Chalcedony/Quartz), SiO2

Granite Pebble

Granite; primarily composed of Quartz (SiO2), Feldspar (KAlSi3O8), and Mica

Diamond

Carbon (C)

Herkimer Diamond

Quartz (Silicon Dioxide, SiO2)

Diamond (or Diamond Simulant/Cubic Zirconia)

Carbon (C) - if diamond, or Zirconium dioxide (ZrO2) - if Cubic Zirconia

Banded Agate (Dyed Purple)

Agate (Variety of Chalcedony/Quartz), SiO2

Decomposed Granite

Grano-diorite/Granite-residuum (SiO2 primary)

Blue Crackle Quartz (Dyed Quarzite)

Silicon Dioxide (SiO2) with artificial dye

Cullet Glass (Slag Glass)

Amorphous Silicon Dioxide (Industrial Byproduct)

Asphalt Concrete (Bituminous Conglomerate)

Anthropogenic Bituminous Conglomerate

Magnetite (Lodestone variety)

Magnetite (Fe3O4)

Granite

Granite (primarily Quartz, Feldspar, and Mica)

Citrine Quartz

Silicon Dioxide (SiO2)

Chrysocolla and Malachite Beads

Hydrated copper silicates (Chrysocolla) and Copper carbonate hydroxide (Malachite)

Smoky Quartz

Smoky Quartz (SiO2 - Silicon Dioxide with trace impurities of aluminum)