Mineral Composite

Unakite

Epidotized Granite

Basalt

Basalt

Granite

Granite (Phaneritic Quartz-Feldspar-Mica composite)

Quartzite (or Quartz Slab)

SiO2 (Silicon Dioxide)

Conglomerate

Conglomerate (Clastic Sedimentary Rock)

Blue quartzite or blue aventurine glass-like aggregate

Quartzite, predominantly SiO₂ (identification uncertain from image)

Synthetic Zinc/Polycarbonate Composite (Bey-specimen)

Zinc Alloy (Zamak 3) with Polycarbonate (C15H16O2)n Overlay

Unakite

Altered Granite (Epidotized Granite)

Chakra Stone (Composite / Man-made Bonded Gemstones)

Composite of Quartz, Lapis Lazuli, Aventurine, Tiger's Eye, and Jasper (SiO2, (Na,Ca)8(AlSiO4)6(S,Cl,SO4,OH)2, etc.)

Opal (in Jewelry Setting)

Hydrated Silicon Dioxide (SiO2·nH2O)

Quartzite (Engineered Stone)

Silicon Dioxide (SiO2) based synthetic composite

Asphalt (Bituminous Pavement Bit)

Bitumen-bound aggregate (Petrochemical-bound composite)

Gastly (Trick or Trade Halloween Series)

Cellulose-carbonaceous composite (Lignocellulose laminated with pigmentary polymers)

Basalt

Basalt

Conglomerate

Polymictic Conglomerate

Freshwater Pearl

Calcium Carbonate (CaCO3) - Aragonite/Calcite organic composite

Iron-Nickel Meteorite (Possible Chondrite or Oxidized Iron)

Siderite (Nickel-Iron) or Chondrite (Si/Fe composite)

Terrazzo (Synthetic Composite Rock)

Cementitious or Epoxy Resin-bound Aggregates

Granite

Granite (a plutonic igneous rock)

Pink Zebra Jasper

Microcrystalline Quartz (SiO2)

Cultured Marble (Synthetic)

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

Man-made Synthetic Material (Plastic/Composite)

Acrylonitrile Butadiene Styrene (ABS) or High-Impact Polystyrene (HIPS)

Brick

Fired clay or Ceramic material (no specific mineralogical scientific name as it's a composite)

Concrete with Aggregate

Composite construction material; primary matrix is Calcium Silicate Hydrate (C-S-H)

Asphalt Chunk

Asphalt concrete

Asphalt aggregate (crushed stone in bitumen)

Artificial composite; predominantly crushed granite, basalt, limestone, and/or recycled aggregate bound by bitumen

Asphalt

Asphalt concrete (engineered material, not a naturally occurring rock/mineral in this form)

Concrete / Anthropogenic Conglomerate

Man-made composite material (Portland cement, aggregate, and water)

Basalt

Basalt (extrusive igneous rock)

Engineered Quartz Stone

Agglomerated Quartz (SiO2 + Polymer Resin)

Tiger Iron

Tiger Iron (Hematite, Red Jasper, and Chert/Tiger's Eye composite)

Tiger Iron

Tiger Iron (Hematite, Red Jasper, and Chert/Tiger's Eye composite)

Banded malachite cabochon

Malachite, Cu₂CO₃(OH)₂; the dark bands may be manganese-oxide or other sulfide-rich matrix, and could also indicate a composite or treated specimen

Ruby in Zoisite

Anyolite (composite of Corundum Al2O3 and Zoisite Ca2Al3(SiO4)(Si2O7)O(OH))

Banded Gneiss

Gneiss (pronounced 'nice')

Ruby in Zoisite

Anyolite (composite of Corundum [Al2O3] and Zoisite [Ca2Al3(SiO4)(Si2O7)O(OH)])

Geode with Quartz and possibly Jasper/Hematite

Quartz (SiO2) and Chalcedony (cryptocrystalline SiO2), possibly stained by iron oxides

Likely polished leopard-skin jasper or brecciated jasper

Jasper, an opaque microcrystalline variety of quartz (SiO₂), with iron-oxide and other mineral inclusions; exact variety cannot be confirmed from the image alone

Polymictic breccia, possibly volcanic breccia

Polymictic clastic breccia; likely a matrix-supported breccia containing lithic fragments, quartz, feldspar, and dark mafic minerals

White quartz in dark matrix (likely quartz-bearing breccia or polished composite specimen)

Quartz, SiO₂, in an unidentified dark silicate matrix

Asphalt (Bituminous Concrete)

Bituminous mix / Anthropogenic conglomerate

Quartz (Engineered Stone Countertop)

Silicon Dioxide (SiO2) with polymer resins