Sedimentary (Processed Mineral Product)

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

Granite

Felsic intrusive igneous rock

Himalayan Salt Lamp

Halite (NaCl)

Likely blue-green kyanite crystal

Kyanite, Al₂SiO₅

Muscovite Schist

KAl2(AlSi3O10)(OH)2 (Muscovite) in Schist Matrix

Polished garnet bead bracelet

Garnet group, likely almandine–pyrope solid solution; commonly approximated as Fe₃Al₂(SiO₄)₃–Mg₃Al₂(SiO₄)₃

Clay (as a rock-forming material)

Clay minerals (e.g., Kaolinite group, Smectite group, Illite group, Chlorite group)

Dyed mineral cluster, likely calcite or aragonite

Calcite (CaCO₃) or aragonite (CaCO₃), artificially color-enhanced

Fossil-bearing concretion, possibly containing a fossil shell or other organic inclusion

Calcareous concretion; exact fossil and host-rock composition are not identifiable from the image

Amethyst bead bracelet

Amethyst, purple quartz (SiO₂)

Dyed red crystal aggregate, likely quartz or salt

Uncertain; possibly dyed quartz (SiO₂) or halite (NaCl)

Milky Quartz

Silicon Dioxide (SiO2)

Hematite

Iron(III) oxide (Fe2O3)

Unidentified dark, flat specimen

Indeterminate; image resolution is insufficient for mineral identification

Quartzite (Engineered Stone)

Silicon Dioxide (SiO2) based synthetic composite

Polished black stone, likely shungite

Shungite; carbon-rich mineraloid composed mainly of amorphous carbon, with silica and other minerals

Small seashell fossil or shell fragment

Likely calcium-carbonate shell material, chiefly aragonite or calcite; exact species indeterminate

Polished blue stone, likely sodalite or dyed quartz

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

Quartzite River Cobble

Quartzite (primarily SiO2)

Limonite (Ironstone) Concretion

FeO(OH)·nH2O (Hydrous ferric oxide)

Fossilized bivalve shell fragment

Calcitic mollusk shell, commonly Bivalvia; exact genus cannot be determined from the image

Likely iron-rich slag or weathered ironstone

Hematite–goethite-rich material (Fe₂O₃/FeO(OH)); possibly industrial iron slag

Tumbled serpentine-rich rock

Serpentinite, likely antigorite/lizardite with magnetite and minor carbonates

Ocean Jasper

Orbicular Jasper (Silicon Dioxide, SiO2)

Epidote

Epidote (Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH))

Silver (Native or Alloyed)

Ag (Argentum)

Turquoise color-bead and Hematite necklace

Turquoise (CuAl6(PO4)4(OH)8·4H2O) and Hematite (Fe2O3)

Paving-concrete aggregate with a rounded stone

Polymictic gravel aggregate; the central clast appears to be weathered sandstone or volcanic rock

Orbicular jasper (likely ocean jasper)

Silica-rich jasper, predominantly microcrystalline quartz (SiO₂), with iron-oxide and volcanic/mineral inclusions

River Stone (likely Siltstone or fine-grained Basalt)

Clastic Sedimentary (Siltstone) or Mafic Igneous (Basalt)

Milky quartz pebble

Quartz, SiO₂ (microcrystalline to crystalline variety)

Weathered iron-rich rock, possibly limonite/goethite or ironstone

Limonite (hydrated iron oxides; commonly goethite, FeO(OH), with hematite and/or magnetite)

Green cabochon gemstone pendant, likely turquoise or dyed green turquoise

Probably turquoise, CuAl₆(PO₄)₄(OH)₈·4H₂O; exact identification requires testing

Tumbled carnelian

Chalcedony (microcrystalline quartz), SiO₂

Weathered sandstone or altered volcanic rock

Indeterminate; likely quartz–feldspar-rich sandstone, possibly tuff

Rounded pebble, likely quartz-rich river stone

Indeterminate quartz-feldspar-rich lithology; possibly weathered granite or quartzite

Green glassy slag or manufactured glass bead

Noncrystalline silicate glass; likely industrial glass/slag, not a true mineral

Likely rose quartz or quartz-rich stone

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

Red Claystone / Mudstone

Argillaceous sedimentary rock

Kyanite

Aluminum Silicate, Al2SiO5

Tumbled quartz crystal

Quartz (silicon dioxide, SiO₂)

Quartzite Pebble

Metamorphic Quartz (SiO2)