Metamorphic (Likely Gneiss Or Schist Based On Texture)

Basalt (Porphyritic)

Basalt (Mafic Extrusive Igneous Rock)

Tumbled greenstone, likely nephrite jade

Nephrite jade (interlocking tremolite–actinolite amphibole; Ca₂(Mg,Fe)₅Si₈O₂₂(OH)₂)

Shungite

Non-crystalline carbonoid (Shungite)

Porphyritic Basalt (with Weathered Jointing)

Porphyritic Basalt

Aventurine (likely Green Aventurine)

Aventurine (a variety of quartz, SiO₂, with common inclusions of fuchsite)

Quartz-veined Schist (or Metasandstone)

Metamorphic Rock with Quartz Veining (SiO2)

Quartzite

Hydrothermal Quartz or Quartzite (SiO2)

Rounded granite or granitic gneiss cobble

Granite, chiefly quartz, potassium feldspar, plagioclase, and biotite/hornblende

Likely weathered fossil shell or fossiliferous limestone

Indeterminate molluscan fossil, possibly a bivalve or brachiopod preserved in carbonate rock

Black Tourmaline

Schorl (Sodium Iron Aluminum Borosilicate Hydroxide); NaFe2+3Al6(Si6O18)(BO3)3(OH)3(OH)

Weathered Sandstone or Siltstone

Sedimentary Rock

Epidote

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

Graphite

Carbon (C)

Native Gold

Native Gold (Au)

Coquina or Fossiliferous Limestone

Fossiliferous Calcarenite (CaCO3)

Granite (weathered cobble)

Granite

Quartzite in Conglomerate

Clastic Sedimentary Rock with Silicon Dioxide (SiO2) inclusions

Emerald

Beryl (Be3Al2Si6O18), specifically the green variety colored by chromium or vanadium

Tiger's Eye (likely variant or dark tumble)

Pseudomorph of Quartz after Crocidolite (SiO2)

Quartz (in matrix)

Quartz (SiO₂)

Diorite or Granodiorite Pebble

Intermediate Phaneritic Igneous Rock

Granite Cobble

Granite (Felsic Intrusive)

Quartzite (Milky Quartz Cobble)

Silicon Dioxide (SiO2)

Vesicular basalt (likely weathered lava rock)

Basalt, predominantly calcium-rich plagioclase, pyroxene, and commonly olivine; vesicular texture from gas bubbles

Likely quartz cluster with iron staining

Quartz (SiO₂), possibly with calcite or feldspar inclusions

Quartz Pebble (Tumbled / Beach Pebble)

Silicon Dioxide (SiO2)

Infinite Stone

Serpentine with Chrysotile (Mg3(Si2O5)(OH)4)

Quartz (Milky Quartz)

Silicon Dioxide (SiO2)

Jade (Nephrite or Jadeite)

Nephrite: Ca2(Mg,Fe)5Si8O22(OH)2 (amphibole mineral); Jadeite: NaAlSi2O6 (pyroxene mineral)

Aquamarine

Beryl (Be3Al2Si6O18 with iron impurities)

Cat's Eye Moonstone (Simulated/Synthetic or natural Cat's Eye Quartz/Glass)

There is no single scientific name. The appearance suggests either: Moonstone (feldspar group), Cat's Eye Quartz (SiO2), Apatite (Ca5(PO4)3(F,Cl,OH)), or most likely a synthetic material such as Fiber Optic Glass or 'Opalite' (a type of glass).

Weathered porphyritic basalt

Basalt, likely plagioclase-phyric basalt; primarily a fine-grained aggregate of plagioclase feldspar, clinopyroxene, and possibly olivine or iron-titanium oxides

Green Calcite

Calcium Carbonate (CaCO3)

Schorl (Black Tourmaline)

NaFe2+3Al6(Si6O18)(BO3)3(OH)3(OH)

Granite

Phaneritic intrusive igneous rock (primarily SiO2)

Eclogite

Eclogite (Omphacite + Pyrope)

Coquina

Biogenic Limestone (Calcite, CaCO3)

Quartz (Milky or Smoky Quartz)

Silicon Dioxide (SiO2)

Dyed Quartzite

Metamorphosed Quartz (SiO2) with synthetic pigment

Nephrite Jade

Ca2(Mg, Fe)5Si8O22(OH)2

Quartz-veined Metamorphic Rock

Quartz Vein in Phyllite or Schist (SiO2 in Silicate Matrix)

Graphite

Graphite (Carbon, C)