Wood Beads (Palmwood/Ebony)
Various species for wood, but often refers to woods like Palmwood (e.g., Borassus flabellifer) or Ebony (Diospyros spp.) for their distinctive grain and hardness.
Category
Browse synthetic or natural fiber specimens identified by the Rock Identifier community.
Wood Beads (Palmwood/Ebony)
Various species for wood, but often refers to woods like Palmwood (e.g., Borassus flabellifer) or Ebony (Diospyros spp.) for their distinctive grain and hardness.
White seed-bead gemstone strand, likely freshwater pearl or shell pearl
Pearl: nacreous calcium carbonate, chiefly aragonite (CaCO₃) in conchiolin; identification uncertain from image
Pink Sapphire
Corundum (Al2O3 with trace Chromium and Iron)
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
Goldstone (Red)
Aventurine Glass
Green Fluorite (likely synthetic or heat-treated for jewelry)
Calcium Fluoride (CaF2)
Ruby (set in a gold pendant)
Ruby (Variety of Corundum, Al2O3)
Diamond (Heart Cut)
Carbon (C)
Charoite
(K,Sr,Ba,Ca)15-16(Na,Ca)8(Si,Al)24O60(OH,F)4 · nH2O (Hydrated silicate of potassium, calcium, and sodium)
White jade bangle with gray accent bead
Likely nephrite jade (microcrystalline tremolite–actinolite); possibly white jadeite, identification requires testing
Goldstone (aventurine glass)
Synthetic copper-bearing soda-lime glass; commonly sold as red goldstone
Blue Goldstone
Aventurine glass (Synthetic borosilicate glass with cobalt and metallic inclusions)
Satin Spar (Selenite)
Gypsum (Calcium Sulfate Dihydrate) - CaSO4·2H2O
Pink Cubic Zirconia (CZ)
Zirconium Dioxide (ZrO2)
Smoky Quartz
Silicon Dioxide (SiO2)
Diamond
Carbon (C)
Rough Corundum (likely Sapphire or Common Corundum)
Aluminum oxide (Al2O3)
Sapphire (likely blue synthetic sapphire or blue glass in a ring)
Corundum (Al₂O₃), specifically the blue variety due to trace amounts of iron and titanium impurities. If synthetic, it would still be Al₂O₃.
Smoky Quartz
Silicon Dioxide (SiO2)
Cubic Zirconia (CZ) Jewelry
Zirconium dioxide (ZrO2)
Blue Topaz (specifically London Blue or Swiss Blue based on color saturation)
Al2SiO4(F,OH)2 (Aluminum Silicate Fluoride Hydroxide)
Seraphinite
Clinochlore (a variety of the chlorite group)
Turquoise
Hydrated phosphate of copper and aluminium [CuAl6(PO4)4(OH)8·4H2O]
Serpentine-rich serpentinite pebble
Serpentinite, composed chiefly of serpentine-group minerals (lizardite, antigorite, chrysotile), commonly with magnetite and minor brucite
Cubic Zirconia (CZ)
Cubic Zirconium Dioxide (ZrO2)
Rough Diamond (Uncut Diamond)
Native Carbon (C)
Tumbled brown stone, possibly amber or polished agate
Indeterminate from image; possibilities include amber (fossilized plant resin, organic) or chalcedony/quartz (SiO₂)
Polished blue chalcedony or glass-like quartz specimen
Chalcedony (microcrystalline SiO₂), possibly treated or synthetic; exact identification requires testing
Diamond (appearing as a jewelry centerpiece)
Diamond (Formula: C)
Amber
Succinite (specifically for Baltic amber; general formula C10H16O)
Pearl-and-gemstone insect brooch
Pearl: nacre (aragonite, CaCO₃); colored stones are likely synthetic or natural corundum/spinel/glass, not determinable from the image
Unidentified dark pebble
Unknown
Magnetic Hematite
Magnetized Hematite (an iron oxide mineral, Fe2O3, that has undergone magnetization)
Rutilated Quartz
Quartz (SiO2) with Rutile inclusions (TiO2)
Ruby
Corundum (Al2O3 with Chromium traces)
Strawberry Quartz
Silicon Dioxide (SiO2) with inclusions of Goethite or Hematite
Black Tourmaline
Schorl (Na(Fe²⁺)₃Al₆(BO₃)₃Si₆O₁₈(OH)₄)
Diamond
Carbon (C)
Slag Glass (Cullet)
Amorphous Silica (man-made), primarily SiO2 with trace metal oxides
Sapphire
Corundum (Al2O3)
Yellow tumbled/rough chalcedony, possibly citrine or dyed agate
Chalcedony (microcrystalline SiO₂), with yellow coloration likely from iron oxides; exact identification is uncertain from the photograph
Polished hematite
Hematite (Fe₂O₃), likely a tumbled iron-oxide specimen