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  • Pearl Half Drilled Round, 8 - 9 mm

Pearl Half Drilled Round, 8 - 9 mm

  • 8111437
  • £3.00  exc.VAT

Most pearls are products of bivalve mollusks mainly of the oyster type. They are built up of mother-of-pearl which is mainly calcium carbonate that binds the microcrystals concentrically around an irritant. The size of pearls varies between a pin head and a pigeon's egg. One of the largest pearls ever found is 2inches long and weighs 454ct (90.8grams), it is in the South Kensington Museum in London. 

Shape: Pearl Half-Drilled

Size: 8x9mm

Weight: 0.67grams

Colour: Mixed: White, Pink, Red, Dark Purple

Moh's hardness: 2½ - 4½

Density: 2.60-2.85

Cleavage: None

Refractive index: 1.52-1.66

Dispersion: None