Mineral (Refined Metal)

Lepidolite and Tiger's Eye

K(Li,Al)3(Si,Al)4O10(F,OH)2 (Lepidolite) / SiO2 (Quartz/Tiger's Eye)

Native Copper

Native Copper (Cu)

Gold Nugget

Native Gold (Au)

Pyrite

Iron Disulfide (FeS2)

Granite

Intrusive igneous rock

Granite

Intrusive Igneous Rock

Native Copper

Native Copper (Cu)

Granite

Intrusive igneous rock (Felsic)

Quartz / Calcite Vein Rock

Silicon Dioxide (SiO2) or Calcium Carbonate (CaCO3)

Rainbow Hematite / Magnetic Hematite

Iron oxide (Fe2O3) - often synthetic/coated for beads

Lepidolite

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

Pyrite

Iron Sulfide (FeS2)

Granite

Intrusive igneous rock

Granite

Felsic intrusive igneous rock

Native gold in quartz matrix

Native gold (Au), with quartz (SiO₂) and possibly sulfide minerals

Granite Pebble

Granite

Bismuth Crystal

Bismuth (Bi)

Gemstone cocktail ring, likely jade and quartz or glass beads

Possible jadeite (NaAlSi₂O₆) or nephrite (Ca₂(Mg,Fe)₅Si₈O₂₂(OH)₂); the peach-colored beads cannot be reliably identified from the image

Copper Ore

Cupriferous Rock / Mixed Mineral Matrix

Weathered gold-bearing quartz vein fragment

Quartz (SiO₂) with probable iron oxides and sulfide/mineral inclusions

Diamond (or White Topaz / Quartz in Gold Setting)

Carbon (C) [if Diamond] or SiO2 / Al2SiO4(F,OH)2

Likely weathered mafic rock (basalt or gabbro)

Basalt–gabbroic rock; chiefly plagioclase feldspar, pyroxene, and possibly olivine

Likely native metallic mineral specimen

Uncertain from photograph; possibly pyrite (FeS₂) or a sulfide-rich metallic ore

Diamond bracelet (gold-set)

Diamond, crystalline carbon (C); gold alloy setting

Red heart-shaped glass bead in a wire-wrapped jewelry charm

Likely colored glass (amorphous silica-based material); the image does not show an identifiable geological specimen

Pyrite-bearing Rock

Iron Sulfide (FeS2) associated with host rock

Pyrite

Iron Disulfide (FeS2)

Bull Quartz (White Quartz)

Silicon Dioxide (SiO2)

Iron Slag

Iron/Steel Slag (Ferrosilicate Glass)

Gold

Native Gold (Au)

Turquoise-look necklace (likely stabilized/reconstituted turquoise or dyed howlite)

Turquoise: hydrated copper aluminum phosphate, CuAl₆(PO₄)₄(OH)₈·4H₂O; visual substitutes may be dyed howlite, Ca₂B₅SiO₉(OH)₅

Native Copper

Native Copper (Cu)

Likely metallic mineral specimens

Probably native iron or iron oxide/hydroxide material; exact identification requires testing

Amethyst Cluster

Silicon Dioxide (Quartz variety: Amethyst) - SiO2

Iron-stained quartz-bearing rock

Quartz (SiO₂), likely in a limonite/goethite-rich matrix

Gold

Native Gold (Au)

Native Copper

Native Copper (Cu)

Native copper nugget

Copper (Cu), often with cuprite or copper-oxide surface

Quartz Veinated Sandstone or Siltstone

Silicon Dioxide (SiO2) within a clastic sedimentary matrix

Serpentinite

Serpentinite (Mg, Fe, Ni, Al, Zn, Mn)2-3(Si, Al, Fe)2O5(OH)4

Granite

Felsic intrusive igneous rock

Quartz Vein in Host Rock

Silicon Dioxide (SiO2) within Metasedimentary or Igneous Matrix