Mohave Turquoise (Composite/Stabilized)
Hydrated copper aluminium phosphate (CuAl6(PO4)4(OH)8·4H2O) with stabilizing resin and metallic inclusions
mineral
Category
Mineral, Metal (Element)
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Pyrite (on host rock/ore)
Iron Sulfide (FeS2)
mineral
Slag
Anthropogenic Iron Silicate Glass
mineral
Opalite
Synthetic Glass (typically Silica/Magnesium based with metal additives)
mineral
Quartz-rich vein rock, possibly gold-bearing quartz
Massive quartz (SiO₂), with probable iron-oxide and sulfide staining; exact identification requires testing
mineral
Pyrite (Cube variety)
Iron Sulfide (FeS2)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Sandstone (Quartz-rich)
Arenite (SiO2 based clastic rock)
sedimentary
Slag
Ferrous Slag (Amorphous calcium-magnesium-aluminum silicates)
igneous (artificial/anthropogenic)
White Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
mineral
Rose Quartz
Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese
mineral
Tiger's Eye
Pseudomorph of Quartz after Crocidolite (SiO2)
mineral
Diamond
Carbon (C)
mineral
Gold Nugget
Native Gold (Au)
mineral
Blue Topaz
Aluminum Silicate Fluoride Hydroxide Al2SiO4(F,OH)2
mineral
Polished chalcedony (likely moss or dendritic agate)
Microcrystalline quartz, SiO₂, with iron/manganese oxide inclusions
mineral
Iron-stained quartz rock
Quartz (SiO₂), likely ferruginous quartz or quartz-rich breccia
mineral
Milky Quartz
Quartz (Silicon Dioxide) - SiO2
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Dyed Purple Agate Sliced
Silicon Dioxide (SiO2) with artificial pigment
mineral
Slag Glass (Cullet)
Amorphous Silicon Dioxide (SiO2) with metal oxide colorants
Anthropogenic (Man-made)
Dalmatian Stone
Dalmatian Jasper (Peralkaline Quartz-Feldspar Rock)
igneous
Copper-bearing Quartz (with Malachite and Iron Oxides)
Quartz (SiO2) with Malachite (Cu2CO3(OH)2) and Hematite/Limonite (Fe2O3)
Mineral Specimen
Pyrite
Iron Sulfide (FeS2)
mineral
Slag
Anthropogenic Vitreous Silica/Iron oxides
mineral-like byproduct
Iron Slag
Anthropogenic Vitreous Silicate (Byproduct of Smelting)
Mineral-like byproduct
Serpentinite
Serpentinite (complex silicate mineral group (Mg,Fe)3Si2O5(OH)4)
metamorphic
Hypersthene
Hypersthene (Magnesium Iron Silicate - (Mg,Fe)SiO3)
mineral
Mystic Topaz
Aluminum silicate fluoride hydroxide with titanium coating (Al2SiO4(F,OH)2)
mineral
Pyrite on Limestone
Iron Disulfide (FeS2) in Calcium Carbonate (CaCO3) matrix
sedimentary (matrix) / mineral (inclusion)
Opalite
Man-made Synthetic Glass (Silicon Dioxide with metal additives)
mineral
Sandstone
Arenite (primarily Quartz, SiO2)
sedimentary
Quartz (Druzy / Goldstone Gemstone Cabochon)
Silicon Dioxide (SiO2)
gemstone
Cubic Zirconia (Man-made)
Cubic Zirconia (ZrO2) with Enamel and Metal Alloy
mineral
Synthetic Zinc/Polycarbonate Composite (Bey-specimen)
Zinc Alloy (Zamak 3) with Polycarbonate (C15H16O2)n Overlay
Anthropogenic Mineral Mimic
Banded agate pendant (likely carnelian or brown-and-white chalcedony agate)
Agate, a banded variety of chalcedony; microcrystalline quartz, SiO₂, with iron-oxide coloration
gemstone
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Rough Aquamarine
Beryl (Be₃Al₂Si₆O‑₁₈)
mineral
Lepidolite Polished Point
Lepidolite (K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
Mineral
Bauxite (Iron-stained Chert / Ironstone Aggregate)
Hydrous aluminum oxide mixture (mainly Gibbsite Al(OH)3, Boehmite γ-AlO(OH), and Goethite α-Fe3+O(OH))
sedimentary
Opalite
Opalescent Glass (SiO2 + coloring agents)
Mineral (Synthetic/Man-made)