The basic differences between saltwater pearls, freshwater pearls and cultured pearls.

Saltwater Pearls:

  1. They have a high degree of iridescence and luster.
  2. Color varies from white through pale shades of pink, yellow, blue and green to brown or the dark gray that is the color of the black pearl.

Freshwater Pearls:

  1. These usually lack a significant degree of iridescence.

Cultured Pearls:

  1. The thickness of the Nacre disposition over the MOTHER-OF-PEARL bead is 1/6th - 1/10th of the diameter of the bead.
  2. These are always lighter in weight. A pearl of 5mm in diameter will weigh about 3.6 grains.

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