Organic Gem Material (Botanical)

Blue-green copper mineral-bearing rock, likely chrysocolla with malachite

Chrysocolla (hydrated copper aluminosilicate, approximately (Cu,Al)₂H₂Si₂O₅(OH)₄·nH₂O) with malachite (Cu₂CO₃(OH)₂), possibly in altered host rock

Turquoise

CuAl6(PO4)4(OH)8·4H2O

Ruby (rough corundum)

Corundum, aluminum oxide (Al₂O₃), chromium-bearing variety

Weathered quartz-rich rock or fossil fragment

Indeterminate; likely quartz-bearing sandstone or siliceous fossil material

Smoky Quartz (Polished)

Silicon Dioxide (SiO2)

Blue-green beryl, likely aquamarine in quartz or feldspar matrix

Beryl, Be₃Al₂Si₆O₁₈; the blue-green variety is aquamarine

Likely mica-rich metamorphic rock (schist/phyllite)

Muscovite–quartz–feldspar schist, possibly chlorite schist

Likely garnet (rough crystal)

Garnet group, likely almandine (Fe₃Al₂(SiO₄)₃); identification from the image is uncertain

Limonite-stained ironstone, possibly goethite

Goethite/limonite (FeO(OH) and hydrated iron oxides), identification tentative

Polished banded river stone

Likely foliated gneiss or banded metamorphic rock; exact identification requires a fresh surface or testing

Chert (Agatized/Chalcedony variety)

Microcrystalline Quartz (SiO2)

Rough garnet (likely almandine)

Almandine garnet, Fe₃Al₂(SiO₄)₃ (tentative visual identification)

Blue Apatite

Calcium Phosphate (Ca5(PO4)3(F,Cl,OH))

Polished labradorite sphere

Labradorite, a calcium-rich plagioclase feldspar (approximately (Ca,Na)(Al,Si)₄O₈)

Purple cabochon gemstone, likely charoite

Charoite, a complex potassium-calcium silicate mineral; identification from the image is uncertain

Olivine

(Mg,Fe)2SiO4

Quartz

Silicon Dioxide (SiO2)

Diamond

Diamond (pure Carbon, C)

Peridot (Olivine)

Olivine ((Mg,Fe)2SiO4)

Polished red/purple tourmaline

Elbaite tourmaline, complex borosilicate: Na(Li,Al)₃Al₆(BO₃)₃Si₆O₁₈(OH)₄

Amber-colored bead earrings

Likely amber (fossilized tree resin); material cannot be confirmed from the image

Amber

Succinite (Fossilized Tree Resin)

Mica-rich schist (likely muscovite schist)

Muscovite–quartz schist; chiefly muscovite mica, quartz, and minor feldspar/biotite

Blue Goldstone

Synthetic glass with copper or cobalt/manganese inclusions

Orange cabochon ring

Possibly carnelian (microcrystalline quartz, SiO₂); identification from the photograph is uncertain.

Freshwater Pearl

Calcium Carbonate (CaCO3) in the form of Aragonite and Calcite

Brecciated quartzite (likely iron-stained quartz vein material)

Quartzite; predominantly quartz (SiO₂), with dark iron/manganese-oxide or mica-rich seams

Green faceted gemstone earrings

Undetermined; possibly green glass or synthetic emerald-type material, rather than identifiable natural emerald

Kyanite

Al2SiO5

Peridot ring

Gem-quality olivine, typically forsterite–fayalite solid solution ((Mg,Fe)₂SiO₄)

Micaceous schist (likely quartz–mica schist)

Quartz–mica schist; chiefly quartz (SiO₂), muscovite/biotite micas, with possible feldspar and accessory iron oxides

Fossilized Bone

Permineralized Vertebrate Bone

Red synthetic corundum (ruby-colored lab-grown sapphire)

Corundum, aluminum oxide (Al₂O₃), likely synthetic and chromium-colored

Aquamarine bead bracelet

Beryl, Be₃Al₂Si₆O₁₈; blue color is typically caused by trace iron

Smoky quartz (likely)

Quartz, silicon dioxide (SiO₂), smoky variety

Yellow quartz pebble

Quartz (SiO₂), likely iron-stained or naturally yellow quartz; exact variety cannot be determined visually

Petrified Wood

Silicified Wood (SiO2)

Clear faceted gemstone in a metal jewelry setting (likely imitation glass or cubic zirconia)

Unidentified transparent faceted stone; possibly cubic zirconia (ZrO₂) or glass

Pearl necklace

Pearl, primarily aragonite (CaCO₃) and conchiolin

Faceted orange gemstone stud (possibly citrine)

Unconfirmed; possibly quartz (SiO₂), variety citrine

Polished chrysocolla cabochon

Chrysocolla, a hydrated copper phyllosilicate; commonly intergrown with quartz, malachite, or other copper minerals

Mixed Mineral Collection

Multi-mineral Assemblage (Quartz, Jasper, Obsidian, Pyrite, etc.)