Antropogenic (Man Made Material)

Quartz

Silicon Dioxide (SiO₂)

Anthracite Coal

Anthracite

Quartzite

Quartzite (primarily SiO2)

Pyrite (Fool's Gold)

Iron Disulfide (FeS2)

Chert (Lightly weathered variety)

Silicon Dioxide (SiO2) - Microcrystalline Quartz

Quartzite

Quartzite (primarily SiO2)

Jasper (specifically variegated or swamp jasper beads)

Silicon Dioxide (SiO2) - Cryptocrystalline Quartz

Chert (Iron-stained)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Chert (specifically Flint or Jasper variant)

Microcrystalline or Cryptocrystalline Silicon Dioxide (SiO2)

Chert (Flint)

Silicon Dioxide (SiO2)

Quartz (likely milky quartz or a stained variety)

Silicon Dioxide (SiO₂)

Turquoise

Hydrated phosphate of copper and aluminium [CuAl6(PO4)4(OH)8·4H2O]

Rough Emerald

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

Hypersthene

Hypersthene (Enstatite variety), (Mg,Fe)SiO3

Chrysocolla

Hydrated copper silicate - Cu2-xAlx(H2-xSi2O5)(OH)4·nH2O

Olivine (likely Peridot variety)

Olivine Mineral Group (specifically Forsterite-Fayalite solid solution series); Chemical formula: (Mg,Fe)2SiO4

Muscovite Mica

Muscovite - KAl2(AlSi3O10)(OH)2

Dendritic Agate (or Dendritic Opal)

SiO2 (for Agate), SiO2·nH2O (for Opal)

River Quartzite Spheroid

Recrystallized Orthoquartzite (SiO2)

Biotite Schist

Biotite Schist (K(Mg,Fe)3AlSi3O10(OH,F)2)

Mica Schist

Mica Schist (Complex Silicate Rock)

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Flint

Chert (a form of cryptocrystalline quartz, chemical formula SiO₂)

Shale or Argillite

Shale (fine-grained clastic sedimentary rock) or Argillite (low-grade metamorphic rock derived from shale)

Jasper (yellow/cream variety)

SiO₂ (Cryptocrystalline Quartz)

Iron Slag

Ferrous Slag (complex silicate and oxide byproduct)

Diamond

Diamond (C)

Obsidian

Volcanic glass

Diamond (Rough)

Diamond (C)

Basalt

Basalt (a mafic extrusive igneous rock)

Pebble or Cobble (likely composed of sandstone or conglomerate)

Clastic Sedimentary Rock (specific name like sandstone, conglomerate, or breccia would require microscopic analysis of clast size and angularity)

Seraphinite

Clinochlore (Mg,Fe)5Al(AlSi3O10)(OH)8 - specific variety for Seraphinite due to its fibrous inclusions and chatoyancy.

Diamond

Diamond (C)

Chert (often called Flint when dark)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Quartzite (Milky Quartz Cobble)

Silicon Dioxide (SiO2)

Peridot (likely, based on color and appearance)

Olivine group mineral, specifically (Mg,Fe)2SiO4 (Forsterite-Fayalite solid solution series)

Unakite

Unakite (Epidote-Feldspar rock)

Black Star Diopside (beads)

Diopside (CaMgSi2O6) - a member of the pyroxene group

Basalt

Basalt (Mafic Extrusive Igneous Rock)

Ferruginous Quartz (Iron-stained Quartz)

Silicon Dioxide (SiO2) with Hematite/Limonite impurities

Laterite (iron-rich nodule, possibly Bauxite as a subtype)

Laterite (composed of various minerals including goethite, hematite, gibbsite, etc.)

Diamond

Carbon (C), specifically a solid form of the element carbon with atoms arranged in a crystal structure called diamond cubic.