Mineral Based Human Made Alloy

Diamond

Diamond (a metastable allotrope of carbon, C)

Chert (Jasper-like Silicate)

Microcrystalline quartz (SiO2)

Chert (specifically Flint or Common Chert)

Chert (Cryptocrystalline Silica, SiO2)

Chert (Jasper/Flint variety)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Chert (Jasper/Flint variety)

Microcrystalline quartz (SiO2)

Chert / Jasper

Microcrystalline Quartz (SiO2)

Chert (Flint variety)

Microcrystalline Quartz (SiO2)

Chert (and Flint variant)

Chert (SiO2)

Chert (specifically Flint)

Microcrystalline Quartz (SiO2)

Chrysocolla in Jasper (Chryso-Jasper)

Cu2-xAlx(H2-xSi2O5)(OH)4·n H2O (Chrysocolla) + SiO2 (Jasper)

Greenschist (Chlorite Schist)

Greenschist (Metamorphic rock dominated by chlorite, actinolite, and epidote)

Mica Schist

Mica Schist (primarily Muscovite or Biotite sheet silicates)

Serpentinite

Serpentinite (composed primarily of serpentine-group minerals like antigorite, chrysotile, and lizardite; chemical formula varies but generally Mg3Si2O5(OH)4)

Hematite

Iron(III) oxide (Fe2O3)

K2 Jasper (K2 Granite)

Azurite in Granite (Al2Cu3(CO3)2(OH)2 in NaAlSi3O8)

Orca Agate (Blue Chalcedony)

Silicon Dioxide (SiO2)

Amethyst

SiO2 (Silicon Dioxide)

Chert (Flint)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Epidote

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

Chert (Flint)

Silicon Dioxide (SiO2)

Yellow Chert (Jasper)

Microcrystalline Quartz (SiO2)

Chert (Flint)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Limonite (Iron Stone/Goethite)

Limonite (mixture of hydrated iron oxides, primarily Goethite: α-FeO(OH))

Limonite (Yellow Ochre)

Limonite (an amorphous mixture of hydrated iron oxides, primarily FeO(OH)·nH2O)

Granite

Granite (Alkali feldspar, Plagioclase feldspar, and Quartz)

Agate

Agate (a cryptocrystalline variety of Quartz, SiO₂)

Sandstone (with man-made markings)

Arenite (composed primarily of Quartz, SiO2)

Halite

Halite (NaCl)

Chert (Chert / Flint)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Grey Granite

Phaneritic Felsic Intrusive Igneous Rock

Quartz (River Pebble)

Silicon Dioxide (SiO2)

Copper Ore (with Azurite and Malachite)

Cuprite, Azurite (Cu3(CO3)2(OH)2), Malachite (Cu2(CO3)(OH)2)

Chert (Septarian Concretion/Nodule)

Microcrystalline silica (SiO2) with carbonate mineral veining

Granite

Phaneritic plutonic rock (SiO2 typically >69%)

Red Jasper

Silicon Dioxide (SiO2) with iron oxide inclusions

Yellow Topaz (Imperial or Precious Topaz)

Al2SiO4(F,OH)2 (Aluminum Silicate Fluoride Hydroxide)

Quartz Vein in Host Rock (Gabbro or Basalt)

Silicon Dioxide (SiO2) with Mafic Silicates

Chert (Flint variety)

Microcrystalline or cryptocrystalline Quartz (SiO2)

Chert (Jasper/Agate variety)

Cryptocrystalline Quartz (SiO2)

Chert (Jasper/Common Opal mix)

Microcrystalline Quartz (SiO2)

Chert (Jasper variety)

Microcrystalline Quartz (SiO2)

Flint Nodule

Microcrystalline Quartz (SiO2)