Mineralogical Simulant

Dalmatian jasper

Orbicular microcrystalline quartz rock, commonly rhyolitic or volcanic-feldspar matrix with black arfvedsonite/alkali-amphibole inclusions

Granodiorite

Granodiorite (containing Plagioclase, Quartz, and Biotite)

Granitic Gneiss

Gneiss (High-grade metamorphic rock)

Granite

Phaneritic Plutonic Felsic Rock

Granite (Fine-grained)

Phaneritic Felsic Igneous Rock

Granite

Granite (Felsic Plutonic Rock)

Granite

Phaneritic Plutonic Igneous Rock (Granite)

Granite

Phaneritic Igneous Rock (composed of quartz, alkali feldspar, and plagioclase)

Granite

Felsic Intrusive Igneous Rock

Granite (Alkali-feldspar Granite)

Felsic Plutonic Rock (Primary minerals: Quartz SiO2, Orthoclase KAlSi3O8, Plagioclase (Na,Ca)AlSi3O8)

Basalt with Plagioclase Phenocrysts

Porphyritic Basalt

Pink Granite

Granite (Phaneritic intrusive igneous rock)

Quartzite

Quartzite (primarily SiO2)

Granite (with Orthoclase and Quartz)

Phaneritic Felsic Igneous Rock (KAlSi3O8 + SiO2)

Green fluorite crystal

Fluorite (calcium fluoride, CaF₂)

Diamond (or Diamond Simulant)

Carbon (C)

Diamond (or Diamond Simulant)

Carbon (C) - Native Element

Diamond ring

Diamond, crystalline carbon (C), set in a metal ring

Diamond ring (likely diamond with gold band)

Diamond, crystalline carbon (C); band appears gold alloy

Diamond (or Diamond Simulant)

Carbon (C)

Tumbled dark green stone, likely serpentine

Serpentinite; chiefly serpentine-group minerals (Mg₃Si₂O₅(OH)₄)

Green glass-like cabochon, likely synthetic glass or resin

Unidentified green transparent material; possibly molded glass, synthetic spinel, or resin

Tumbled kambaba jasper (likely)

Kambaba jasper, a silica-rich microcrystalline quartz aggregate, commonly containing fossilized cyanobacterial structures and dark green amphibole/pyroxene minerals

Tiger's Eye (with Hematite/Jasper)

SiO2 (Silicon Dioxide) with Fe2O3 (Hematite)

Colorless Gemstone (possibly Diamond or Cubic Zirconia)

C (Diamond) or ZrO2 (Cubic Zirconia)

Serpentine (Serpentinite)

Serpentinite (complex silicate group including lizardite, chrysotile, and antigorite)

Carborundum (Silicon Carbide)

Silicon Carbide (SiC) / Moissanite (natural form)

Polished bumblebee jasper (likely)

Calcite–sulfur-rich volcanic breccia, commonly sold as “bumblebee jasper”

Opalite

Synthetic Glass (Hydrated Silica Simulant)

Raw ruby (likely corundum)

Corundum, Al₂O₃; red varieties are ruby

Tumbled green jasper or serpentine

Jasper: microcrystalline quartz (SiO₂); possible serpentine: Mg₃Si₂O₅(OH)₄

Tumbled green aventurine (probable)

Quartz (SiO₂), commonly with fuchsite mica inclusions

Polished green serpentinite

Serpentinite, chiefly serpentine-group minerals (antigorite/lizardite/chrysotile), commonly with magnetite and minor carbonate

Tumbled orange chalcedony and a gray stone disk

Chalcedony (microcrystalline quartz, SiO₂); disk likely fine-grained sandstone or slate

Galena-bearing ore

Galena (lead sulfide, PbS), likely with sphalerite and sulfide gangue

Graphite-rich metamorphic rock (likely graphite schist)

Graphite schist; predominantly graphitic carbon (C) with mica and quartz

Polished brecciated jasper

Silica-rich microcrystalline quartz/chalcedony (SiO₂), with iron-oxide and other mineral inclusions

Small brown-gray mineral fragment

Indeterminate; possibly weathered quartz-, feldspar-, or iron-oxide-bearing rock

Silicon Carbide (Carborundum)

Moissanite (SiC), though mostly synthetic

Labradorite

(Ca, Na)(Al, Si)4O8 (Calcium Sodium Aluminum Silicate)

Sand Grain (Quartz)

Silicon Dioxide (SiO2)

Hag Stone

Sandstone or Limestone with Solution Holes (Bioturbation/Erosion)