Man Made (Synthetic Rock)

Granite

Phaneritic Felsic Igneous Rock

Basalt

Basalt (Mafic volcanic rock)

Diorite

Intermediate plutonic igneous rock

Granite

Granite (Felsic Plutonic Rock)

Chert (Flint / Jasper)

Silicon Dioxide (SiO2)

Faceted clear gemstone in a gold-colored ring

Unidentified colorless faceted gem; possibly quartz, glass, or another transparent gem material

Red gemstone ring, likely synthetic ruby or red glass

Unidentified red faceted stone; ruby is corundum (Al₂O₃)

Small colored gemstone or glass cabochons (uncertain)

Not identifiable from the image; the pieces may be colored glass or synthetic stones rather than natural minerals.

Granite

Granite (plutonic igneous rock)

Granite

Granite (phaneritic intrusive igneous rock consisting of quartz, feldspar, and mica)

Chert (Flint)

Silicon Dioxide (SiO2)

Pearl (Imitation / Cultured Pearl)

Calcium carbonate (CaCO3) with conchiolin (or synthetic glass/plastic imitation)

Colorless faceted gemstone, likely cubic zirconia

Synthetic cubic zirconia (ZrO₂), tentative; possibly diamond or synthetic moissanite

Faceted purple-blue beads, likely synthetic glass or treated gemstone

Indeterminate; possible synthetic corundum, synthetic spinel, or dyed quartz (SiO₂)

Cubic Zirconia and Synthetic Ruby Jewelry

Cubic Zirconia (ZrO2) and Synthetic Corundum (Al2O3)

Sandstone

Arenite (SiO2 based typically)

Sandstone (likely Quartzose)

Clastic sedimentary rock (SiO2 primary)

Asphalt aggregate (crushed stone in bitumen)

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

Red faceted gemstone, possibly synthetic ruby or red glass

Unidentified red gem; ruby is corundum (Al₂O₃), while glass is amorphous silicate

Slate

Slate (Foliated Metamorphic Rock)

Opal

Hydrated Amorphous Silica (SiO2·nH2O)

Colorless faceted gemstone, likely glass or cubic zirconia

Uncertain; possible cubic zirconia (zirconium dioxide, ZrO₂) or synthetic glass

Basalt

Basalt

Diabase (Dolerite)

Diabase

Granite

Granite (composed primarily of Quartz, Alkali Feldspar, and Plagioclase)

Lapis Lazuli

Lapis Lazuli (Complex aggregate including Lazurite: (Na,Ca)8(AlSiO4)6(S,Cl,SO4,OH)2)

White pebbles (rock material not identifiable from the image)

Undetermined; the smooth, pale pieces could be quartz, quartzite, or another light-colored rock

Sandstone

Sedimentary Rock (Quartz arenite)

Lapis Lazuli

Lapis lazuli (Rock composed primarily of Lazurite (Na,Ca)8(AlSiO4)6(S,Cl,SO4,OH)2, Calcite, and Pyrite)

Sandstone

Clastic sedimentary rock (primarily SiO2)

Dyed Quartz Pendant

Silicon Dioxide (SiO2) with artificial dye

Sandstone

Arenite (composed primarily of SiO2)

Sandstone

Arenite

Tumbled brown chalcedony (likely jasper or agate)

Microcrystalline quartz, SiO₂; chalcedony with iron-oxide staining

Chalcedony (Agate/Chert variety)

Silicon Dioxide (SiO2)

Yooperlite (fluorescent syenite)

Syenite containing fluorescent sodalite, chiefly Na₈(Al₆Si₆O₂₄)Cl₂

Faceted quartz crystal sphere (likely rock crystal)

Quartz, silicon dioxide (SiO₂)

Faceted yellow gemstone (possibly citrine or synthetic glass)

Undetermined; citrine is yellow quartz (SiO₂), but the image cannot confirm the material

Likely slate

Slate, a fine-grained metamorphic rock composed mainly of mica-group minerals and quartz

Granite Pebble

Felsic intrusive igneous rock

Diamond (or Diamond Simulant)

C (Carbon) or synthetic equivalent

Sandstone

Arenite (variable SiO2 composition)