Mineral (Evaporite)

Granite

Granite

Diamond (or high-quality simulant like Cubic Zirconia)

Carbon (C) - Native Element

Diamond

Carbon (C)

Quartz Pebble

Silicon Dioxide (SiO2)

Gneiss

Gneiss (High-grade Regional Metamorphic Rock)

Serpentinite

Serpentinite (Mg, Fe, Ni, Al, Zn, Mn)2-3(Si, Al, Fe)2O5(OH)4

Petrified Wood

Silicified Wood (SiO2)

Vesicular Basalt with Zeolite

Mafic volcanic rock with Hydrated Aluminosilicate minerals (Zeolite group)

Milky Quartz Pebble

Quartz (Silicon Dioxide, SiO2)

Shale or Argillite

Shale (fine-grained clastic sedimentary rock) or Argillite (low-grade metamorphic rock derived from shale)

Vesicular Basalt

Basalt with secondary mineral infilling (Amygdaloidal Basalt)

Granite Pebble

Granitoid (Felsic Plutonic Rock)

Schorl (Black Tourmaline)

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

Clear Quartz

Quartz (Silicon Dioxide, SiO2)

Iron-stained Quartz (with Limonite/Hematite)

Silicon Dioxide (SiO2) with Iron Oxide inclusions (FeO(OH) or Fe2O3)

Quartz Druze on Matrix

Silicon Dioxide (SiO2)

Green Aventurine and Clear Quartz

Aventurine (variety of Quartz - SiO2) and Quartz (SiO2)

Banded Gneiss

Gneiss (Metamorphic silicate rock)

Mica Schist

Mica Schist (primarily Muscovite and Quartz)

Schist

Crystalline Metamorphic Rock (Schistose)

Serpentine Jade (New Jade/Olive Jade)

Serpentinite (a rock composed primarily of serpentine minerals) / Mg3Si2O5(OH)4 for Antigorite and Lizardite

Mica (Biotite or Phlogopite variety)

Phyllosilicate (complex mineral formula involving K, Mg, Fe, Al, Si, and O)

Sandstone (likely Arkosic or Lithic)

Clastic Sedimentary Rock (composed mostly of SiO2)

Lepidolite

K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2

Chrysocolla

Cu2-xAlx(H2-xSi2O5)(OH)4·nH2O

Specular Hematite

Iron(III) oxide (Fe2O3)

Botryoidal Lace Agate

Agate (Silicon Dioxide, SiO2)

Malachite

Copper(II) carbonate hydroxide, Cu2CO3(OH)2

Greenschist (Greenstone)

Greenschist

Granite

Granite (composed primarily of Quartz, Feldspar, and Mica/Amphibole)

Granite

Granite (composed primarily of Quartz SiO2, Potassium Feldspar KAlSi3O8, and Plagioclase)

Diorite

Diorite (Intermediate Plutonic Rock)

Diorite

Diorite (Intermediate intrusive igneous rock)

Petoskey Stone

Hexagonaria percarinata

Gold-bearing Quartz and Pyrite

Auriferous Quartz (SiO2 + Au) with Pyrite (FeS2)

Greenschist

Greenschist (Chlorite Schist)

Vesicular Basalt

Basalt (Mafic volcanic rock)

Granite

Phaneritic Felsic Intrusive Igneous Rock

Sand (Construction Grade)

Unconsolidated siliciclastic sediment (primarily SiO2)

Sandstone

Arenite (predominantly SiO2)

Granite (including Pegmatite variants)

Phaneritic Plutonic Rock (composed primarily of Quartz SiO2, Feldspar KAlSi3O8, and Biotite/Muscovite mica)

Ferruginous Sandstone (Gozzan/Ironstone)

Arenite with Limonite/Goethite cement (FeO(OH)·nH2O)