Sedimentary Like (Industrial Composite)

Decorated turquoise-like bead or mineral pendant

Likely turquoise [CuAl₆(PO₄)₄(OH)₈·4H₂O], possibly dyed composite or blue-green jasper

Pegmatite

Igneous Pegmatite

Ruby in Fuchsite (Composite/Stabilized)

Corundum (Al2O3) in Chromium-rich Muscovite (K(Al,Cr)2(AlSi3O10)(OH)2)

Chakra Stone Tower (Composite Multi-Mineral)

Crystalline Silicon Dioxide composite (SiO2) with various inclusions

Jasper and Chalcedony Composite

Silicon Dioxide (SiO2) microcrystalline quartz

Chrysocolla in Jasper / Green Jasper

Cu2-xAlx(H2-x)Si2O5(OH)4·nH2O in SiO2 matrix

Gastly (Trick or Trade Halloween Series)

Cellulose-carbonaceous composite (Lignocellulose laminated with pigmentary polymers)

Jasper and Mudstone Composite

Silicified Sedimentary Rock / Jasperoid Pebble

Crushed Granite and Quartz Gravel

Composite Igneous and Silicate Rock Aggregate

Oak-grain Laminate (Industrial/Decorative Furniture Finish)

Melamine Resin-impregnated Decorative Paper on Particleboard (Cellulose/Thermosetting Plastic)

Polished blue copper mineral, likely chrysocolla or dyed howlite

Chrysocolla: hydrated copper phyllosilicate, approximately (Cu,Al)₂H₂Si₂O₅(OH)₄·nH₂O; visual identification is uncertain from the image

Polished pietersite-like brecciated jasper

Silicified chalcedony/jasper aggregate, primarily SiO₂; exact material uncertain from image

Asphalt Concrete (Bituminous Pavement)

Aggregates in Bitumen Matrix

Polished tiger iron

Tiger iron; interlayered hematite–jasper–crocidolite/quartz rock

Polished chrysocolla cabochon

Chrysocolla, a hydrated copper phyllosilicate; commonly intergrown with quartz, malachite, or other copper minerals

Purple Turquoise (Composite Mojave Turquoise)

CuAl6(PO4)4(OH)8·4H2O (Hydrated copper aluminum phosphate composite)

Polished tiger iron

Tiger iron; interlayered hematite, jasper, and crocidolite-quartz (often riebeckite)

Terrazzo (Man-made Composite)

Cementitious or Resin-bound Lithic Composite

Small polished jasper or agate pebble

Likely microcrystalline quartz (SiO₂); exact variety cannot be determined from the photo

Fossilized turtle shell or carapace

Testudines indeterminate; shell mainly fossilized calcium-carbonate bone (apatite)

Composite Turquoise or Reconstituted Turquoise with Copper inclusions

CuAl6(PO4)4(OH)8·4H2O (Turquoise) mixed with matrix and copper/bronze flakes

Polished tiger iron

Tiger iron: banded quartz (SiO₂), red jasper, and crocidolite-derived fibrous iron oxides

Mother of Pearl (Nacre) / Shell Fragment

Biogenic Calcium Carbonate (Aragonite and Conchiolin)

Quartzite with Mica / Gneiss Pebble

Metamorphic Rock (Quartz-Feldspar-Mica aggregate)

Concrete

Anthropogenic Sedimentary Rock (Hydrated Calcium Silicate)

Blue-green quartz-rich stone, possibly chrysoprase or aventurine

Uncertain; likely quartz (SiO₂) with green coloration from nickel-bearing minerals or inclusions

Mohave Turquoise (Composite/Stabilized)

Hydrated copper aluminium phosphate (CuAl6(PO4)4(OH)8·4H2O) with stabilizing resin and metallic inclusions

Dragon Blood Jasper

Epidote-bearing Quartz Microcrystalline Aggregate

Graphite

Graphite (Native Carbon, C)

Mother of Pearl (Nacre)

Aragonite (CaCO3) with Organic Matrix

Weathered concrete or cementitious slab (not natural rock)

Artificial calcium-silicate cement composite; likely Portland cement concrete

Jasper and Chalcedony Nodule

Silicon Dioxide (SiO2) - Microcrystalline Quartz

Asphalt Pavement (with aggregate)

Asphalt concrete

Engineered Quartz

Engineered Stone (primarily SiO2)

Cultured Marble (Synthetic)

Polymer-matrix composite (typically calcium carbonate in polyester resin)

Opal ring

Common opal, likely synthetic or assembled blue-green opal (hydrated amorphous silica, SiO₂·nH₂O)

Concrete Fragment

Hardened Portland Cement Composite

Conglomerate

Polymictic Conglomerate

Decorative mosaic cross containing mixed rock and glass fragments

Polychrome aggregate; likely quartz, feldspar, marble, granite, and assorted colored glass

Polished banded agate slab or agate-look decorative stone

Microcrystalline quartz (chalcedony), SiO₂; exact identification is uncertain from the image

Terrazzo (Synthetic Composite Rock)

Cementitious or Epoxy Resin-bound Aggregates

Unakite

Unakite Epidosite (composite of Epidote, Orthoclase, and Quartz)