Mineral (Processed Alloy)

Blue slag glass / industrial glass fragment

Artificial silicate glass, composition variable; likely copper- or cobalt-colored furnace slag

Native Platinum

Platinum (Pt)

Pyrite-bearing rock, likely quartz vein

Pyrite (FeS₂) in quartz-rich host rock

Likely rose quartz or quartz-rich stone

Quartz, silicon dioxide (SiO₂); pink coloration may reflect trace iron, titanium, or inclusions

Milky Quartz

Silicon dioxide (SiO2)

Blue tumbled stone, possibly sodalite

Likely sodalite (Na₈(Al₆Si₆O₂₄)Cl₂); identification is uncertain from the image

Tumbled milky quartz

Quartz (SiO₂), microcrystalline or massive variety

Pink tourmaline (rubellite)

Elbaite tourmaline, lithium sodium aluminum borosilicate: Na(Li1.5Al1.5)Al6(BO3)3Si6O18(OH)4

Granite

Granite (Felsic Plutonic Rock)

Tumbled quartz

Quartz (silicon dioxide, SiO₂)

Tumbled quartz crystal

Quartz (silicon dioxide, SiO₂)

Possible sodalite-bearing rock

Sodalite, Na₈(Al₆Si₆O₂₄)Cl₂, likely in a feldspathic matrix

Carved serpentine wing sculpture

Serpentine-group rock, chiefly antigorite/lizardite: Mg3Si2O5(OH)4

Slag

Ferrous slag (by-product of iron smelting)

Granite countertop with a small pale mineral fragment

Granite; predominantly quartz, feldspar, and mica

Green glassy gemstone-like specimen

Likely synthetic glass or treated quartz; exact identification requires testing

Silver (Morgan Dollar)

Native Silver (Ag) - 90% Silver, 10% Copper alloy

Aura Quartz

Titanium-coated Silicon Dioxide (SiO2)

Amethyst and mixed gemstone bracelet

Amethyst: purple quartz, silicon dioxide (SiO₂); likely accompanied by other quartz or decorative mineral beads

Stibnite (antimonite)

Stibnite, Sb₂S₃

Clear quartz crystal

Quartz (silicon dioxide, SiO₂)

Beaded mineral/crystal jewelry (likely turquoise and coral accents)

Variable; blue beads may be turquoise (CuAl6(PO4)4(OH)8·4H2O), with possible dyed howlite, glass, or composite materials

Iron-rich concretion or slag-like rock

Goethite–hematite limonite concretion, possibly iron slag

Copper-bearing rock, likely native copper in matrix

Native copper (Cu), possibly with cuprite/iron-rich matrix

Iridescent bismuth crystal

Bismuth (Bi), commonly laboratory-grown

Aquamarine

Beryl (Be₃Al₂Si‑₆O₁₈)

Aquamarine

Beryl (Be₃Al₂Si₆O₁₈)

Tumbled amethyst

Amethyst, purple quartz (SiO₂), colored mainly by iron-related defects

Peacock ore (bornite/chalcopyrite), likely treated

Bornite, Cu₅FeS₄, and/or chalcopyrite, CuFeS₂

Gold-bearing quartz or ironstone fragment

Quartz (SiO₂) with possible native gold and iron oxides

Gold coin pendant on a chain

Gold (Au), likely a coin set in a gold-colored metal mount

Hematite cameo or hematine imitation

Hematite (Fe₂O₃); possibly synthetic hematine or black glass

Tumbled black-and-white stone, likely dendritic agate or jasper

Cryptocrystalline quartz (SiO₂), possibly chalcedony with manganese-oxide dendrites

Beryl (Variety: Aquamarine/Green Beryl)

Beryllium Aluminum Silicate (Be3Al2Si6O18)

Decorative polished pebbles

Likely mixed quartz-rich lithologies, including quartzite, jasper, and/or basalt

Tumbled red jasper

Jasper, microcrystalline quartz (SiO₂) colored mainly by iron oxides

Blue-dyed magnesite beads (often sold as “turquoise howlite”)

Magnesite, MgCO₃; commonly dyed blue and possibly marketed as dyed howlite, Ca₂B₅SiO₉(OH)₅

Tumbled pale green aventurine or chalcedony

Quartz-group silica, primarily microcrystalline SiO₂; possible fuchsite-bearing aventurine

Native copper (likely a small copper nugget)

Copper, Cu; native-element mineral

Dyed turquoise-colored lava stone beads

Vesicular basalt (scoria), commonly sold as dyed lava rock

Native Copper

Native Copper (Cu)

Polished blue stone, likely sodalite or dyed quartz

Possibly sodalite (Na₈Al₆Si₆O₂₄Cl₂) or artificially dyed quartz/chalcedony; image alone is inconclusive