
Baroque Pearl (and potentially a small Sapphire/Blue Topaz)
Pearl: Calcium Carbonate (aragonite or calcite) with conchiolin. Sapphire: Aluminum Oxide (Al2O3). Blue Topaz: Al2SiO4(F,OH)2.
AI-generated identification · may be incorrectBaroque Pearl: Irregular shape, often elongated or undulating. Luster: Pearly to iridescent (orient), depending on nacre quality. Color: White, cream, pink, silver, grey, golden, black, with possible overtones. Hardness: 2.5-4.5 on Mohs scale (relatively soft).…
- Hardness
- 2
- Luster
- Pearly to iridescent (orient), depending on nacre quality
Identify your own rocks.
Get a report just like this from any photo, free.
Physical properties
Formation & geological history
Uses & applications
Geological facts
Field identification & locations
More like this
Other organic gemstone (for pearl), mineral (for sapphire/topaz) specimens
Blue Topaz (Cut Gemstone)
Aluminum silicate fluoride hydroxide (Al2SiO4(F,OH)2)
Blue Apatite
Apatite - Ca5(PO4)3(F,Cl,OH)
White Topaz
Aluminum silicate fluoride hydroxide [Al2SiO4(F,OH)2]
Natural Pearl
Calcium carbonate (primarily Aragonite and Conchiolin), CaCO3
Blue Topaz (facetted in jewelry)
Aluminum silicate fluoride hydroxide (Al2SiO4(F,OH)2)
Pearl
Calcium Carbonate (CaCO3) with Conchiolin