Mineral Based Human Made Alloy

Quartz / Common Gravel

Silicon Dioxide (SiO2)

Chalcedony (Agate/Chert variety)

Silicon Dioxide (SiO2)

Serafina (Serafinite / Clinochlore)

Clinochlore (Mg5Al)(AlSi3O10)(OH)8

Glauconitic Sanstone (Glauconite)

Glauconite ((K,Na)(Fe,Al,Mg)2(Si,Al)4O10(OH)2)

Mica-rich Schist fragment

Mica Schist

Sandstone / Weathered Chert

Silicon Dioxide (SiO2) / Quartz-rich Clastic Rock

Conglomerate

Conglomerate (SiO2 matrix with various silicate clasts)

Chert with Quartz Veining

Microcrystalline silica (SiO2)

Dragon Blood Jasper

Epidote with Red Jasper (SiO2 with Ca2(Al,Fe)3(SiO4)3(OH))

Granitic Sand

Detrital sediment (predominantly Quartz, Feldspar, and Mica)

Ferruginous Quartz

Silicon Dioxide (SiO2) with iron oxide inclusions

Emerald

Beryl (Be3Al2Si6O18 with Chromium/Vanadium impurities)

Blue Topaz (specifically London Blue or Swiss Blue based on color saturation)

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

Emerald in Matrix

Beryl (Be3Al2Si6O18) with Chromium/Vanadium impurities

Emerald

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

Lepidolite with Rubellite Tourmaline

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

Fuchsite

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

Graphite

Graphite (Native Carbon, C)

River Cobble (likely Basalt or Greenstone)

Mafic Igneous Rock (with possible chloritic alteration)

Basalt with Calcite Veining

Aphanitic Mafic Igneous Rock (primarily Plagioclase and Pyroxene)

Jasper

Jasper (Silica/Silicon Dioxide, SiO2)

Banded Chert

Microcrystalline Quartz (SiO2)

Granite

Phaneritic Igneous Rock (Granite)

Gneiss (Augen Gneiss)

Augen Gneiss

Quartz-Veined Sandstone

Quartz-veined Arenite

Basalt with Olivine and Scoria

Extrusive Igneous Rock

Granite

Phaneritic Igneous Rock (Granite)

Granite

Phaneritic Igneous Rock (Granite)

Chalcedony (Moonstone variant or White Agate)

Silicon Dioxide (SiO₂)

Iron Ore / Ironstone Concretion

Mixture of iron oxide/hydroxide minerals, likely some combination of Hematite (Fe2O3), Goethite (α-FeOOH), and Limonite (a general term for hydrated iron oxides of variable composition) or potentially Bauxite (a mixture of aluminum hydroxides, often with iron oxides, (Al(OH)3) and FeO(OH)). The visual characteristics strongly suggest iron-rich material.

Red Sandstone

Arenite (Ferruginous Sandstone)

Zebra Stone (Silicified Siltstone)

Silicified Siltstone with Quartz/Kaolinite inclusions

Shale (or Mudstone/Siltstone)

Sedimentary Mudrock (SiO2, Al2O3 base with clay minerals)

Basalt with Weathering Crust

Extrusive mafic volcanic rock

Limonite-stained Chert

Silicon Dioxide (SiO2) with Hydrated Iron Oxide (FeO(OH)·nH2O)

Dyed Quartz Crystal

Silicon Dioxide (SiO2) with artificial pigment

Chert (Iron-stained)

Silicon Dioxide (SiO2) with Ferruginous impurities

Emerald

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

Basalt River Cobble

Basalt (Aphanitic extrusive mafic igneous rock)

Schist

Mica Schist (primarily composed of quartz, feldspar, and mica)

Marble

Marble (metamorphosed limestone or dolostone), primarily composed of calcite (CaCO3) or dolomite (CaMg(CO3)2)

Granite

Granite (Alkali-feldspar, Quartz, and Plagioclase composition)