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Article: Pearl


General Information about Pearl

  • Pearl is a carbonate mineral composed of calcium carbonate (CaCO).
  • It belongs to the orthorhombic crystal system.
  • Pearls come in various colors such as white, pink, silver, cream, brown, green, blue, black, yellow, orange, red, gold, purple, and iridescent.
  • They have an uneven fracture and a hardness of 2.5-4.5 on the Mohs scale.
  • The specific gravity of pearls ranges from 2.60 to 2.85.

Identification of Pearl

  • Pearls do not have cleavage.
  • The streak of pearls is white.
  • Common pearls have a refractive index of 1.52-1.66, while black pearls have a refractive index of 1.53-1.69.
  • Pearls have a birefringence value of 0.156.
  • The luster of pearls is nacreous and iridescent.

Rarity and Value of Pearls

  • Wild pearls, which occur spontaneously in nature, are extremely rare and valuable.
  • Cultured pearls, farmed from pearl oysters and freshwater mussels, are the majority of pearls sold today.
  • Imitation pearls are widely available in inexpensive jewelry.
  • Pearls have been historically used in jewelry and to adorn clothing.
  • They have also been crushed and used in cosmetics, medicines, and paint formulations.

Pearl Harvesting and Cultivation

  • Wild pearls are harvested from natural sources.
  • Cultured pearls are cultivated through farming techniques.
  • Pearl oysters and freshwater mussels are the primary sources of cultured pearls.
  • The majority of pearls sold in the market are cultured pearls.
  • The process of pearl cultivation has been developed and refined over time.

Symbolism and Metaphorical Significance of Pearls

  • Pearls have become a metaphor for something rare, fine, admirable, and valuable.
  • They are often associated with beauty, elegance, and luxury.
  • Pearls are frequently used as symbols of purity and innocence.
  • In various cultures, pearls hold symbolic and spiritual significance.
  • They are considered timeless and classic jewelry pieces.

Pearl Mentions

Pearl Data Sources

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