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Mabe Pearl

Pearl

By Tim Matthews, JD, FGA, GG, DGA,
CEO and President of JTV (retired)
Published: June 2014
Modified: September 2023
Mabe Pearl Polished Mabe Pearl Rough Mabe Pearl Jewelry
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Table of Contents
  • General Information
  • Mabe Pearl Colors
  • Alternate Names
  • Countries of Origin
  • History
  • Care

The shell of the Pteria penguin, better known as the penguin's wing oyster, have a wing-like extension on one side of the shell is called “Mabé gai” in Japanese. The name “Mabé pearl” is inspired by this reference. The shells of the Pteria penguin and the Pinctada maxima are used to create blister pearls. The Haliotis variety of Abalone has also been used to create “Mabé pearls”. A plastic or wax half or three-quarter spherical or pear-shaped or heart-shaped nucleus is glued to the inside of shell. After two or three years of nacre growth the blister pearl is cut out of the shell. The nucleus is then removed and filled with resin and is backed with mother-of-pearl. The sizes range from 12mm to 25mm. They are more affordable than true cultured pearls.

General Information

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

Mabe Pearl Colors

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

Alternate Names

Blister Pearl

Countries of Origin

Unknown; Cook Islands; China; Japan; Philippines; United States of America; Mexico; Australia; Thailand; French Polynesia; India; Indonesia

History

The “Mabé Pearl Association” was established in 1969 and was made up of 16 different companies. By 1975 only one company remained. This company produces most of the blister pearls in the market. The company spent 20 years developing a breeding program for the Pteria penguin oyster. The company has their own mollusk hatchery and when the mollusks are 3 years old, they used for a pearl harvest. After the pearl harvest they are then used to grow “Mabé pearls”.

Care

Avoid cosmetics, perfumes, hairsprays, heat and household chemicals. “Mabé Pearls" are softer than true cultured pearls and care has to be taken not to damage them.

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