Mineral (Synthetic)

Azurite-Malachite (often a mixed specimen)

Azurite: Cu3(CO3)2(OH)2; Malachite: Cu2(CO3)(OH)2. The specimen appears to be a natural mixture or intergrowth of these two minerals.

Diamond

Diamond (C - Pure Carbon)

Opalite (a synthetic glass, often confused with Opal)

Silicon dioxide glass (SiO2nH2O, for natural opal)

Emerald

Beryl (Be3Al2Si6O18), specifically the green variety colored by chromium or vanadium

Diamond

Carbon (C)

Diamond (Heart Cut)

Carbon (C)

Diamond (Rough)

Diamond (Carbon, C)

Moonstone

Adularia or Orthoclase (KAlSi3O8) or Albite (NaAlSi3O8), specifically with lamellar exsolution of albite and orthoclase.

Crystal Quartz Beads (likely Clear Quartz)

Quartz (SiO₂)

Aquamarine

Aquamarine (Beryl variety); Be3Al2Si6O18

Blue chalcedony cabochon (probable)

Chalcedony, cryptocrystalline quartz; silicon dioxide (SiO₂)

ABS Plastic (Acrylonitrile Butadiene Styrene)

(C8H8)x·(C4H6)y·(C3H3N)z

Black Tourmaline (Schorl)

Schorl (Na(Fe²⁺)₃Al₆(BO₃)₃Si₆O₁₈(OH)₄)

Anthracite Coal

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

Ruby

Corundum (mineral species), variety: Ruby (Al2O3 with Cr3+ as the chromophore)

Moonstone (bead form)

Potassium Aluminum Silicate (KAlSi3O8) - a variety of Orthoclase Feldspar

Amazonite

KAlSi3O8 (Potassium Feldspar, variety of Microcline)

Blue Tiger's Eye

Riebeckite (crocidolite variety)

Sodalite

Sodalite (Na4Al3Si3O12Cl)

Note: Item is not a geological specimen

Guitar Components (Steel, Nickel, Plastic, Wood)

Green glassy mineral specimen, likely rough emerald or green fluorite

Tentatively beryl (Be₃Al₂Si₆O₁₈), emerald variety; synthetic/man-made glass cannot be excluded from the photograph

Lapis Lazuli

A metamorphic rock primarily composed of lazurite (Na,Ca)8[(S,SO4,Cl)2|(Al6Si6O24)], calcite (CaCO3), and pyrite (FeS2).

Man-made Crystal (Lead Glass)

Lead oxide-doped Silica Glass (approx. SiO2 + PbO)

Aquamarine

Beryl (Be3Al2Si6O18), specifically the blue-green variety

Opalite

Man-made synthetic glass with opalescent effects (SiO2 + metal oxides)

Moonstone

Orthoclase Feldspar (KAlSi3O8)

Synthetic Convention Badge (Plastic/PVC)

Polyvinyl Chloride (PVC) / Polycarbonate

Borosilicate Glass (Manufactured)

SiO2 + B2O3 (Silicon dioxide and Boron trioxide)

Concrete Paver (Artificial Cementitious Rock)

Hydrated Portland Cement Aggregate

Sapphire

Corundum (Al₂O₃) with trace elements causing color variations.

Apatite

Apatite group mineral (e.g., Fluorapatite - Ca5(PO4)3F, Chlorapatite - Ca5(PO4)3Cl, Hydroxylapatite - Ca5(PO4)3(OH))

Amber (likely opaque/burnished amber)

Fossilized plant resin; primarily polymerized terpenoid resin (succinite-type amber)

Rutilated Quartz

Quartz (SiO2) with Rutile inclusions (TiO2)

Prehnite

Prehnite, Ca2Al2Si3O10(OH)2

Rough Diamond (Uncut Diamond)

Native Carbon (C)

Magnetic Hematite

Magnetized Hematite (an iron oxide mineral, Fe2O3, that has undergone magnetization)

Emerald

Beryl (variety Emerald), Be3Al2Si6O18 with Cr and/or V

Polished blue chalcedony or glass-like quartz specimen

Chalcedony (microcrystalline SiO₂), possibly treated or synthetic; exact identification requires testing

Colorless faceted gemstone (most likely synthetic cubic zirconia)

Cubic zirconia, ZrO₂ (likely synthetic); natural alternatives include quartz or diamond

Amber

Succinite (specifically for Baltic amber; general formula C10H16O)

Titanium-coated Metal Cube (Man-made Fidget Toy)

Titanium-anodized or electroplated alloy (e.g., Ti-coated Zinc or Aluminum)

Diamond

Diamond (pure carbon; C)