What is Pearl?


Pearl is an organic gemstone produced within the soft tissue of a living shelled mollusk. It’s primarily found in the oceans, freshwater lakes, and rivers. Pearls have been treasured for their lustrous, creamy texture and subtle iridescent reflections since the dawn of humankind.

Pearl is a unique gemstone that is produced by shelled mollusks, primarily oysters. Its lustrous appearance and creamy texture make it a popular choice for jewelry, especially necklaces and earrings.

Gemstone Properties

Chemical ClassificationOrganic - Calcium carbonate (from mollusks)
ColorWhite, cream, golden, green, black, rose, among others.
LusterDeep, radiant shine.
TransparencyGenerally opaque.
OccurrenceAustralia, French Polynesia, China.
FormationForm inside mollusks as a defense mechanism against irritants, coated with layers of nacre.
DiaphaneityOpaque with luster
Mohs Hardness2.5 to 4.5.
Specific Gravity2.6 to 2.78.
Diagnostic PropertiesLustrous, often round, formed in mollusks.
Chemical CompositionCaCO3
PleochroismDo not exhibit pleochroism.
Crystal SystemOrganic, not applicable
Optical PropertiesIsotropic (due to its organic nature)
Refractive Index1.530 - 1.685
BirefringenceNone (isotropic due to organic nature)
2V angleNot applicable (isometric)
DispersionNot applicable.