Mineral Based Alloy (Anthropogenic)

Crushed Stone (Gravel/Aggregates)

Crushed rock aggregate (varied composition including Granite, Limestone, and Quartz)

Fuchsite

Chrome-bearing Muscovite [K(Al,Cr)2(AlSi3O10)(OH)2]

Gneiss

Gneissic Metamorphic Rock

Quartz (Milky/Smoky variety on matrix)

Silicon Dioxide (SiO2)

Sandstone/Quartzite

Sedimentary Rock (composed mainly of SiO2)

Milky Quartz Pebble

Silicon Dioxide (SiO2)

Breccia

Breccia (Clastic Sedimentary Rock)

Sandstone (with potentially metamorphic or basaltic bands)

Arenite / Lithic Wacke

Amygdaloidal Basalt

Basalt with secondary amygdule minerals (likely Epidote or Chlorite)

Lepidolite

Lepidolite (K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2)

Basalt

Aphanitic Mafic Igneous Rock

Basalt with Iron Oxidation (Lattice/Veined)

Mafic Volcanic Rock (principally Plagioclase and Pyroxene)

Citrine

Silicon Dioxide (SiO₂)

Sandstone

Arenite

Lepidolite

Lepidolite (K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2)

Schist

Mica Schist

Rainbow Moonstone with Black Tourmaline

White Labradorite with Schorl (Na,Ca)(Al,Si)4O8

Rhodonite

Rhodonite (Manganese silicate), (Mn,Fe,Mg,Ca)SiO3

Moss Agate and Hematite

Silica (SiO2) with fibrous inclusions of Manganese or Iron; Hematite (Fe2O3)

Granite

Granite (Phaneritic Quartz-Feldspar intrusive rock)

Lepidolite

Lepidolite (K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2)

Red Jasper

Jasper (Silicon Dioxide based crypto-crystalline Quartz with Iron inclusions)

Granite

Phaneritic Igneous Rock (Granite)

Pink Granite

Phaneritic intrusive igneous rock (high Orthoclase Feldspar content)

Fuchsite Schist

Chromium-rich Muscovite (K(Al,Cr)2(AlSi3O10)(OH)2) in Schist

Beryl (Aquamarine) in Matrix with Schorl

Be3Al2Si6O18 (Beryl) with NaFe3Al6(BO3)3Si6O18(OH)4 (Schorl)

Lepidolite

K(Li,Al)3(Si,Al)4O10(F,OH)2

Schist (Diamond Drill Core)

Mica Schist

Blue Topaz (specifically London Blue shade)

Topaz - Al2SiO4(F,OH)2

Emerald

Beryl (Be3Al2(SiO3)6) with Chromium/Vanadium impurities

Red Sandstone

Arenite (Ferruginous Sandstone)

Sandstone with Iron Staining

Arenite with Limonite/Hematite inclusions (SiO2 + Fe2O3/FeO(OH))

Epidote

Epidote - Ca2(Al,Fe)3(SiO4)3(OH)

Bornite

Bornite (Cu5FeS4)

Garden Quartz (Phantom Quartz)

Silicon Dioxide (SiO2) with various inclusions (often Chlorite, Hematite, or Iron)

Sandstone

Arenite (SiO2 primarily)

Muscovite Mica

KAl2(AlSi3O10)(F,OH)2

Blue Topaz

Al2SiO4(F,OH)2 (Aluminum silicate fluoride hydroxide)

Conglomerate (Puddingstone)

Conglomerate (specifically, clastic sedimentary rock)

Greenschist

Greenschist (Actinolite-Chlorite Schist)

Epidote

Epidote (Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH))

Granite

Phaneritic Plutonic Igneous Rock (Granite)