Mabe Pearl

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June Birthstone

Mabe pearls are unique in that they are shaped as a hemisphere, having one flat side. Traditionally, these are blister pearls, forming flat on the shell. The pearl is then "worked" by it from the shell. Today, they are often cultured by inserting a hemispheric nucleus. Mabe pearls come in a wide range of beautiful colors, ranging from light pinks to more bluish shades. Lovely to gaze upon, mabe pearls often have excellent luster and orient. Because of their flattened side, they are usually not as expensive as spherical pearls.

Mabe Pearl Polished
Mabe Pearl Classification
Common Name Mabe Pearl
Species Pearl
Mabe Pearl Optical Properties
Transparency Translucent - Opaque
Refractive Index 1.530-1.685
Birefringence 0.155
Optic Character NA
Optic Sign NA
Pleochroism None
Mabe Pearl Characteristic Physical Properties
Hardness 2.5-4
Toughness Poor
Inclusions Mabe pearls have an Iridescent surface.
Luster Pearly
Stability Poor
Fracture Uneven
Cleavage None
Mabe Pearl Chemistry & Crystallography
Chemical Name calcium carbonate + conchiolin and water
Chemical Formula CaCO3
Crystal System NA
Chemistry Classification Organic

Mabe Pearl Colors

  • Blue Mabe Pearl Blue
  • White Mabe Pearl White
  • Purple Mabe Pearl Purple
  • Pink Mabe Pearl Pink
  • Gray Mabe Pearl Gray

Alternate Names

Blister Pearl

Countries of Origin

United States of America (the); China; Japan; Australia; India; Indonesia

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Tim Matthews


Tim Matthews

Tim Matthews is President and Chief Executive Officer of Jewelry Television® (JTV), as well as a member of the company's Board of Directors. He oversees and leads all aspects of the company's powerful omni-digital retail platform that uniquely specializes in fine jewelry and gemstones. His passion for business and gemstones has led him to become a recognized expert in the field of gemology. He is a life member of the Gemmological Association of Great Britain (Gem-A) and has earned Gem-A's highest degrees, the Gemmology (FGA) and Diamond (DGA) diplomas. He is also a Graduate Gemologist (GG) of the Gemological Institute of America (GIA) and has also completed GIA's Graduate Diplomas in Diamonds, Colored Stones and Pearls. Under his leadership, JTV has become the leader in the sourcing and selling of color gemstones and jewelry.

This page was created on June 27, 2014.

This page was last edited on October 24, 2019.