Industrial Byproduct (Anthropogenic Material)

Polished Chert (Flint)

Silicon Dioxide (SiO2)

Blue calcite (likely)

Calcite, calcium carbonate (CaCO₃)

Banded Iron Formation (BIF) with Quartz

Banded Iron Formation, often composed of alternating layers of hematite (Fe2O3) or magnetite (Fe3O4) and chert (microcrystalline quartz, SiO2)

Black Star Diopside (beads)

Diopside (CaMgSi2O6) - a member of the pyroxene group

Iron-rich sulfide ore, likely pyrite-bearing gossan

Pyrite (FeS₂), possibly mixed with iron oxides/hydroxides and other sulfides

Chert (specifically Flint or Jasper variant)

Microcrystalline or Cryptocrystalline Silicon Dioxide (SiO2)

Colorless faceted gemstone, likely cubic zirconia

Cubic zirconia (synthetic ZrO₂), possibly glass or quartz

Olivine (Peridot)

Magnesium Iron Silicate (Mg,Fe)2SiO4

Red Swirl Beads (Likely Resin or Glass, simulating Red Jasper or Agate)

N/A (for the beads as pictured); Red Jasper: SiO2 (Chert variety); Red Agate: SiO2 (Chalcedony variety)

Tumbled epidote or epidote-rich stone

Epidote, Ca₂(Al,Fe)₃(SiO₄)₃(OH); possibly a green jasper or prehnite-epidote aggregate

Chert (Yellow Jasper variant)

Microcrystalline or cryptocrystalline Quartz (SiO2)

Red Jasper

Silicon Dioxide (SiO2) with iron oxide inclusions

Blue calcite (probable)

Calcite, calcium carbonate (CaCO₃)

Kyanite (Blue Kyanite)

Kyanite (Al2SiO5)

Aragonite Star Cluster (or Aragonite Sputnik)

Aragonite (Orthorhombic Calcium Carbonate, CaCO3)

Diamond

Carbon (C)

Zinc Alloy (Silver-plated)

Zinc Alloy Casting (Zn-Al-Mg-Cu)

Chalcedony (Moonstone variant or White Agate)

Silicon Dioxide (SiO₂)

Red Jasper (Opaque Chalcedony)

Silicon Dioxide (SiO2) with Hematite (Fe2O3) inclusions

Anthracite Coal

Anthracite (Carbon-based organic sedimentary rock transitioned to metamorphic)

Diamond

Diamond (C)

Clear quartz sphere or polished quartz cabochon (tentative)

Quartz, silicon dioxide (SiO₂); appearance may also be consistent with ordinary glass, which cannot be ruled out from the image alone

Chert (Jasper variety)

Silicon Dioxide (SiO2)

Chalcedony (specifically Agate or Flint)

Silicon Dioxide (SiO₂)

Weathered iron-rich rock, possibly laterite or limonite-bearing sandstone

Laterite/limonite-rich material; commonly dominated by goethite (FeO(OH)) and hydrated iron oxides

Note: This is a Man-Made Object (Costume/Prop Patch)

Synthetic fiber and pigments (Cellulose/Plastic-based composite)

Synthetic Zinc/Polycarbonate Composite (Bey-specimen)

Zinc Alloy (Zamak 3) with Polycarbonate (C15H16O2)n Overlay

Diamond

Diamond (pure carbon; C)

Artificial Rock Face (Faux Rock)

Glass Fiber Reinforced Concrete (GFRC)

Carnelian (red chalcedony), possibly red agate or jasper

Chalcedony, a microcrystalline variety of quartz; silicon dioxide (SiO₂), commonly colored red-orange by iron oxides. The specimen may include opaque jasper or agate zones.

Man-made Jewelry (Metal and Glass/Plastic)

Synthetic Alloy and Amorphous Solid (SiO2/Polymer)

Blue Calcite

Calcite (Calcium Carbonate, CaCO3)

Green Calcite

Calcite (Calcium Carbonate, CaCO3)

Talc

Talc (Mg₃Si₄O₁₀(OH)₂)

Petrified Wood

Silicified Wood

Tiger’s eye

Quartz variety, primarily silicon dioxide (SiO₂); fibrous quartz pseudomorph after crocidolite asbestos

Polished white chalcedony or milky quartz pebble

Chalcedony, microcrystalline quartz (SiO₂), possibly with iron-oxide staining or a minor mineral inclusion

Build-A-Bear Plush (Non-Geological)

Polyester fibers (C10H8O4)n and Synthetic Polymers

Diamond

Diamond (C)

Diamond

Carbon (C)

Petrified Wood

Fossilized plant material (Silicon dioxide - SiO2)

Sea Glass (Kelly Green)

Amorphous Silica (Silicon Dioxide with Iron/Chromium additives)