Mineral, Jewelry

Lemon Quartz

Silicon Dioxide (SiO2)

Cubic Zirconia

Zirconium dioxide (ZrO2)

Red Coral

Corallium rubrum

Amazonite

Microcline (KAlSi3O8) with lead trace impurities

Rose Quartz

Silicon Dioxide (SiO2)

Dendritic Agate or Moss Agate Nodules (Septarian-like)

Chalcedony with mineral inclusions (SiO2)

Sodalite

Sodalite (Na8(Al6Si6O24)Cl2)

Diamond (in a jewelry setting)

Cubic Carbon (C)

Diamond (set in jewelry)

Diamond (Carbon, C)

Quartz pebble

Silicon dioxide (SiO2)

Amazonite

K(AlSi3O8) - Potassium Aluminum Silicate (variety of Microcline)

Chrysocolla on Matrix

Hydrated copper silicate (Cu,Al)2H2Si2O5(OH)4·nH2O

Yellow Jasper

Quartz (Silicon Dioxide, SiO2 with impurities)

Native Copper Nugget

Native Copper (Cu)

Faceted Peach Morganite (Beryl)

Morganite (Be3Al2Si6O18 with trace Manganese)

Quartz Geode

Silicon Dioxide (SiO2) in Geodic Cavity

Polished fortification agate (banded agate)

Microcrystalline quartz, SiO₂ (chalcedony with iron-oxide inclusions)

Diamond (set in a gold ring)

Carbon (C) - Adamantine cubic carbon

Amazonite

Amazonite (Microcline Feldspar) - KAlSi3O8

Small brown mineral/rock fragment (unidentified)

Undetermined from the image; no reliable species identification is possible from appearance alone.

Turquoise

Hydrated phosphate of copper and aluminium (CuAl6(PO4)4(OH)8·4H2O)

Turquoise

Hydrated phosphate of copper and aluminium: CuAl6(PO4)4(OH)8·4H2O

Larimar (blue pectolite)

Pectolite, NaCa₂Si₃O₈(OH), commonly copper-bearing blue variety

Green Quartz

Silicon Dioxide (SiO2)

Pink/red faceted gemstone, likely synthetic ruby or pink sapphire

Corundum, aluminum oxide (Al₂O₃); likely lab-grown or treated material

Azurite and Malachite on Matrix

Cu3(CO3)2(OH)2 (Azurite) and Cu2CO3(OH)2 (Malachite)

Quartz (Chatoyant or Milky variety)

Silicon Dioxide (SiO2)

Tiny rounded brown mineral grain

Indeterminate; possibly iron oxide, garnet, or a weathered sulfide grain

Limonite

FeO(OH)•nH2O

Faceted blue gemstone ring, likely synthetic spinel or glass; identity uncertain

Possibly synthetic blue spinel (MgAl₂O₄) or laboratory sapphire (Al₂O₃); the clear side stones may be cubic zirconia or glass

Malachite in Host Rock

Cu2CO3(OH)2

Prehnite

Prehnite (Ca2Al2Si3O10(OH)2)

Kunzite

Spodumene (LiAlSi2O6)

Gold (in Opaque Matrix/Jewelry)

Native Gold (Au)

Pearl

Calcium Carbonate (Aragonite) with Conchiolin; formula: CaCO3

Pyrite

Iron Disulfide (FeS2)

Snowflake Obsidian

Volcanic Glass with Cristobalite inclusions (SiO2)

Jasper with Quartz Vein

Silicon Dioxide (SiO2)

Industrial Diamond (Bort or Boart)

Diamond (pure Carbon, C)

Green Aventurine and Clear Quartz Bracelet

Quartz variety with Fuchsite inclusions (Aventurine) and pure Silicon Dioxide (SiO2)

Moissanite

Silicon Carbide (SiC)

Red Jasper

Silicon Dioxide (SiO2) with iron inclusions