Man Made Glass (Often Grouped With Minerals In Lapidary)

Serpentine

Antigorite/Lizardite (Mg, Fe)3Si2O5(OH)4

Likely clear quartz crystal (possibly cut/polished quartz or glass imitation)

Quartz, silicon dioxide (SiO₂)

Aura Quartz (Titanium/Gold coated)

Silicon Dioxide (SiO2) with metallic vapor deposition

Weathered iron-rich rock, possibly jasper or ironstone

Likely limonite/goethite-bearing siliceous rock; exact identification requires hardness and streak tests

Chert (Flint)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Diamond (or Cubic Zirconia)

Carbon (C) or Zirconium Dioxide (ZrO2)

Chert (Jasper/Flint variety)

Microcrystalline quartz (SiO2)

Strawberry Quartz (or Pink Aventurine)

Quartz with Hematite/Goethite inclusions (SiO2)

Red glassy cabochon, likely synthetic ruby or red glass

Uncertain; possible synthetic corundum (Al₂O₃, chromium-colored) or man-made glass

Corundum (Pink Sapphire / Ruby)

Al2O3 (Aluminum Oxide)

Turquoise (likely stabilized or simulated Howlite)

CuAl6(PO4)4(OH)8·4H2O (Hydrous phosphate of copper and aluminium)

Native Silver

Silver (Ag)

Orgonite Pyramid (containing Amethyst and mixed minerals)

Silicon Dioxide (SiO2) in synthetic resin

Green glassy slag (often sold as “sea glass” or “green obsidian”)

Industrial vitreous slag; primarily amorphous silicate glass, composition variable

K-Feldspar (Potassium Feldspar)

Potassium Feldspar (Microcline / Orthoclase, KAlSi3O8)

Lepidolite

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

Blue chalcedony cabochon (probable)

Chalcedony, a cryptocrystalline variety of quartz; silicon dioxide, SiO₂

Feldspar-Quartz Rock (likely Pegmatite or Granite)

Feldspar-Quartz composite rock (KAlSi3O8 - SiO2)

Yellow Quartz Pebble

Silicon Dioxide (SiO2)

Goldstone (Synthetic Aventurescence Glass)

Cuprous Aventurescent Glass (Silicon Dioxide with Copper inclusions)

Chalcedony with iron-oxide staining

Microcrystalline quartz (SiO₂), likely chalcedony or chert with limonite/goethite staining

Cubic Zirconia (Simulated Diamond)

Cubic Zirconia (ZrO2)

Possible weathered basalt or slag fragment

Basalt, chiefly plagioclase and pyroxene; identification is uncertain from the image

Chert (and Flint)

Silicon Dioxide (SiO2)

Chert (variations include Flint)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Chalcedony (River or Beach Pebbles)

Chalcedony (Silicon Dioxide, SiO2)

Chert (with nodule)

Microcrystalline Quartz (SiO2)

Chert (Common Opal/Jasper variety)

Cryptocrystalline Quartz (SiO2)

Pink Thulite (in Pumice-like texture)

Pink Zoisite (Mn-bearing Zoisite), Ca2Al3(SiO4)3(OH)

Apatite

Ca5(PO4)3(F,Cl,OH)

Polished blue calcite sphere (tentative identification)

Calcite, CaCO₃; blue color generally results from trace impurities or inclusions

Lepidolite

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

Amethyst (with Pyrite and other minerals)

Silicon Dioxide (SiO2)

Blue Sodalite

Sodalite (Na8(Al6Si6O24)Cl2)

Polished pink feldspar pebble

Orthoclase or microcline feldspar, KAlSi₃O₈

Blue-green chrysocolla rough specimen

Chrysocolla, hydrated copper aluminosilicate; commonly associated with malachite, quartz, and limonite

Chert (Arrowhead Fragment)

Microcrystalline Quartz (SiO2)

Chert / Flint

Silicon Dioxide (Microcrystalline Quartz, SiO2)

Man-made Carved Stone (Scream Mask/Skull motif)

Carved Soapstone or Serpentine-rich rock

Serpentinite

Serpentinite (composed primarily of Serpentine group minerals (Mg,Fe,Ni,Al,Zn,Mn)2-3(Si,Al,Fe)2O5(OH)4)

Blue Apatite

Fluorapatite (Ca5(PO4)3F)

Jasper Marble

Silicon Dioxide (SiO2) with Impurities