Man Made Material (Metal)

Copper Ore with Malachite and Chalcocite

Copper-bearing Mineral Assemblage (Cu2CO3(OH)2 + Cu2S)

Milky Quartz

Silicon Dioxide (SiO2)

Weathered quartz-bearing rock, possibly iron-stained quartzite or granitic pegmatite

Indeterminate; likely quartz-rich silicate rock with iron-oxide staining (SiO₂-dominant)

Likely metallic meteorite fragment

Unclassified iron-rich meteorite; possible stony-iron or iron meteorite

Turquoise inlay or stabilized turquoise jewelry fragment

Turquoise — hydrated copper aluminum phosphate, CuAl₆(PO₄)₄(OH)₈·4H₂O

Coquina

Biogenic Limestone (mostly Calcium Carbonate, CaCO3)

Iron-rich meteorite candidate (weathered iron meteorite)

Likely Fe–Ni metal, commonly kamacite and taenite; definitive identification requires laboratory testing

Amethyst cabochon ring

Amethyst, purple quartz (SiO₂), colored primarily by iron-related defects and irradiation

Diamond (set in jewelry)

Diamond (Carbon, C)

Quartz Vein in Host Rock

Silicon dioxide (SiO2) veins in metamorphic/igneous host rock

Blue chalcedony crystal pendant

Chalcedony, microcrystalline quartz (SiO₂), likely blue chalcedony or dyed quartz

Chert / Flint

Silicon Dioxide (SiO2)

Slate

Metamorphic Pelitic Rock

Slate

Metamorphic Pelitic Rock

Chert (Chalcedony/Agate variety)

Silicon Dioxide (SiO2)

Quartzite

Quartzite (primarily SiO2)

Tumbled cream-colored pebble

Likely quartz-rich sandstone or limestone; exact identification requires testing

Red jasper cabochon pendant

Jasper—opaque microcrystalline quartz/chalcedony, primarily SiO₂, colored red by iron oxides

Turquoise cabochon

Turquoise — hydrated copper aluminum phosphate, CuAl₆(PO₄)₄(OH)₈·4H₂O

Cubic Zirconia (Diamond Simulant)

Zirconium Dioxide (ZrO2)

Nephrite Jade

Nephrite

Diamond

Diamond (pure Carbon, C)

Amethyst chip or polished fragment

Quartz, purple variety (SiO₂), likely mounted or attached to metal

Iron Meteorite / Chondrite (Possible)

Extraterrestrial stony-iron or chondritic meteorite

Turquoise cabochon ring

Turquoise, hydrated copper–aluminum phosphate: CuAl₆(PO₄)₄(OH)₈·4H₂O

Gemstone ring with dark blue cabochons

Likely blue sapphire (corundum, Al₂O₃); the stones cannot be identified confidently from the image

Carnelian ring

Carnelian, a red-orange variety of chalcedony (microcrystalline quartz, SiO₂)

Diamond

Diamond (pure Carbon, C)

Iron Slag

Ferrous Slag (Industrial Byproduct)

Rounded river pebble, possibly iron-rich quartzite or basalt

Indeterminate from image; likely fine-grained basalt (mafic silicate rock) or ferruginous quartzite

Milky Quartz

Silicon Dioxide (SiO2)

Likely iron meteorite

Iron meteorite, predominantly kamacite and taenite (Fe–Ni alloys)

Possible basaltic rock or meteorite candidate

Likely vesicular basalt; meteorite identification cannot be confirmed visually

Star sapphire ring

Corundum (Al₂O₃), likely asteriated sapphire

Carved pale green jade-like pendant

Likely nephrite jade (tremolite–actinolite amphibole); possibly serpentine or treated aventurine

Man-made Green Quartz (Lab-grown or Treated)

Silicon Dioxide (SiO2) with artificial coloration

Diamond

Carbon (C)

Faceted yellow gemstone ring

Likely yellow sapphire (corundum), but exact identification requires testing; alternatives include citrine, chrysoberyl, or treated diamond.

Black onyx or black spinel ring stone

Likely chalcedony (SiO₂), variety black onyx; possibly synthetic spinel or glass

Blue Calcite

Calcium Carbonate (CaCO3)

Diamond (in Jewelry)

Carbon (C)

Mixed small pebbles and mineral grains

Unidentified detrital sediment; likely quartz-, feldspar-, and lithic fragments