Metamorphic Rock (For Nephrite And Some Jadeite); Mineral (For Jadeite)

Serpentinite

Serpentinite (composed primarily of Serpentine group minerals: (Mg,Fe,Ni,Al,Zn,Mn)2-3(Si,Al,Fe)2O5(OH)4)

Quartz (possibly milky quartz)

Quartz (Silica; SiO₂)

Grey Slate

Foliated Metamorphic Rock (formed by low-grade regional metamorphism of shale or mudstone)

Agate

Chalcedony (cryptocrystalline quartz)

Sunstone

Plagioclase Feldspar (specifically Oligoclase variety containing hematite or goethite inclusions)", composition: (Ca,Na)(Al,Si)2Si2O8

Iron Ore / Ironstone Concretion

Mixture of iron oxide/hydroxide minerals, likely some combination of Hematite (Fe2O3), Goethite (α-FeOOH), and Limonite (a general term for hydrated iron oxides of variable composition) or potentially Bauxite (a mixture of aluminum hydroxides, often with iron oxides, (Al(OH)3) and FeO(OH)). The visual characteristics strongly suggest iron-rich material.

Soapstone

Steatite (primarily composed of Talc, Mg₃Si₄O₁₀(OH)₂)

Halite

Halite (NaCl)

Quartz

Quartz (SiO2 - Silicon Dioxide)

Quartz Vein in Host Rock

Silicon Dioxide (SiO2)

Orange Quartz with Hematite inclusions

Quartz (SiO2) with Hematite (Fe2O3) inclusions

Serpentinite

Serpentinite (composed primarily of serpentine group minerals like lizardite, antigorite, and chrysotile)

Agate

Agate (Cryptocrystalline Variety of Quartz, SiO2)

Clear Quartz (or Rock Crystal)

Quartz (SiO₂ - Silicon Dioxide)

Clear Quartz (Rock Crystal Fragments)

Silicon Dioxide (SiO2)

Serpentine

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

Green Aventurine

Silicon Dioxide (SiO2) with Fuchsite inclusions

Sandstone

Arenite (general term for sandstone)

Granite

Granite (a common term for a felsic intrusive igneous rock)

Black Tourmaline

Schorl (Na(Fe²⁺)₃Al₆(BO₃)₃Si₆O₁₈(OH)₄)

Quartz

Quartz (SiO2, Silicon Dioxide)

Quartz

SiO₂ (Silicon Dioxide)

Corundum

Corundum (Al2O3)

River Pebble (likely Quartzite or Chert)

Silicon Dioxide (SiO2) crystal conglomerate

Chert (or Flint)

Silicon dioxide (SiO2)

Blue Quartz

Quartz (SiO2) with inclusions

Slate

Slate (Foliated metamorphic rock consisting mainly of quartz and muscovite or illite)

Granite

Granite (a common rock name, not a single mineral species, composed primarily of quartz, feldspar, and mica/amphibole)

Sandstone (likely a river or beach pebble)

Sandstone (a clastic sedimentary rock)

Serpentinite

Serpentinite (composed primarily of serpentine group minerals like lizardite, chrysotile, or antigorite; Mg3Si2O5(OH)4)

Chalcedony or Chert/Jasper with secondary mineral staining

SiO2 (for chalcedony/quartz) with possible secondary copper minerals (e.g., CuSiO3·nH2O for chrysocolla, Cu2(CO3)(OH)2 for malachite) or iron oxides/hydroxides.

Clear Quartz (Rock Crystal)

Quartz (SiO₂)

Granitoid (Granite/Gneiss)

Granitoid silicate rock, primarily quartz and feldspar

Dendritic Agate

Silicon Dioxide with Manganese or Iron Oxide inclusions (SiO2 + Mn/Fe)

Greenstone / Epidosite

Epidosite (Metasomatic rock consisting mainly of Epidite Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH) and Quartz)

Goldstone (with Tiger's Eye and Quartz)

Aventurine glass (Synthetic SiO2 with Cu inclusions)

Tiger's Eye

Tiger's Eye (a variety of Chalcedony, which is cryptocrystalline quartz). Chemical Formula: SiO2 with inclusions of crocidolite fibers.

Marble

Marble (metamorphosed limestone or dolostone), primarily composed of calcite (CaCO3) or dolomite (CaMg(CO3)2)

Mica Schist

Mica Schist (predominantly composed of Muscovite or Biotite silicates)

River Pebble (Quartzite/Siltstone mixture)

Silicon Dioxide (SiO2) mixture with varied clastic minerals

Graphite

Graphite (Carbon, C)

Mixed collection of Quartz varieties, Chalcedony, and metamorphic pebbles

Mixed gemstones (primarily Silicon Dioxide - SiO2)