The difference between natural, industrial and agricultural pearls


Contents

  • 1 concept of pearls
  • 2 The difference between natural, industrial and agricultural pearls
  • 3 pearls used in jewelry
  • 4 Quality pearls
  • 5 The most common sources of pearls
  • 6 References

The concept of pearl

Pearls can be defined as a costly and rare substance that is formed when a stimulating or irritating substance enters a soft animal, where this soft animal secretes layers of aragonite and kincholin to protect itself, which causes the formation of pearls. As any animal can mollusk to form a pearl, as the oyster pearls with golden lips or pearl oysters with silver lips of class animals Alpinktada ( in English: Pinctada) in maxima in the Indian Ocean and the Pacific from Japan to Australia is the most common in the pearl production process This pearl is called the South Sea pearl. [1] Pearls are often used by jewelry designers to make necklaces, bracelets, earrings, and rings, among others. [2]

The difference between natural, industrial and agricultural pearls

Natural pearls, artificial pearls and agricultural pearls can be differentiated by:
  • Agricultural pearls: Pearls that require the intervention of a person to make them where the person inserts a tissue or a bead in the slugs, so that the soft animal settles the layers around the material that the person placed, to form a pearl similar to the natural pearl. [3]
  • Natural pearls: shaped natural pearl strange material to the mollusk body, who shall put the animal squamous layers to protect it, which is a natural pearl. [4]
  • Artificial pearls: Pearls that are not related to nature to manufacture and be entirely made by man. [5]

Pearls used in jewelry

Different types of pearls are produced from several types of shellfish, where each shellfish lives in a different area from the other, living in very different and specific climatic conditions, and there are three main types of pearls used in jewelry and accessories , which are: [6]
  • Freshwater pearl.
  • Akoya pearls.
  • Southern Sea Pearl.

Quality pearls

Pearl is one of the rare precious stones. Pearls are made of natural and organic products for living organisms. The quality of the pearl and its final size vary according to the climate factor and the nutritional conditions of the mollusk environment, the size and health of the mollusks that produced the pearl, and the size of the nucleus inside the pearl. Therefore, the pearls have standards and measures to ensure Quality and value, including: [6]
  • The size of the pearl: where the size of the pearl is measured according to the length of its diameter in millimeters, and the size of the pearl ranges between 1 mm and 20 mm, so if all measures of the quality of the pearl are similar and equal, then the value of the pearl is determined according to its size, and the sizes of the most common pearls range between 6.5 mm and 11 mm .
  • The shape of the pearl: There are many different forms of pearls, and the shape of the pearl depends on the shape of the core forming it, and the position of the pearl inside the oyster, where scientists divide the pearls into seven main forms, namely:
    • Circular pearls: They are completely round and spherical pearls, and this type of pearls is very rare, and due to its rarity it is very desirable.
    • Semi-circular pearls: These pearls are not completely round and spherical, they may be slightly expanded rather than completely spherical, yet they are classified as spherical.
    • Semi-circular pearls: they are semi-circular pearls.
    • Oval pearls: These pearls are oval in shape, as the ends of both ends are narrower than the middle.
    • Button pearls: They are flat pearls that look like buttons or discs, and are often used in making earrings.
    • Teardrop-like pearls: These pearls are in the form of a pear or teardrop shape, and may be either long or short depending on the origin of the pearl, and this type of pearl can also be used in the manufacture of earrings.
    • Baroque pearls: These pearls are asymmetrical and irregular in shape, and can resemble a cross, wand, or other forms.
    • Semi-Baroque Pearls: These pearls are irregular in shape and can resemble a button or a drop of pearls.
  • Pearl color: The color of the pearl is dependent on the pigment that constitutes it, and the pearl color can be as follows:
    • Body colored pearls.
    • Pearls in transparent color.
    • Pearl colored rainbow.
  • The luster or luster of the pearl: The luster or luster of the pearl is produced when light travels through the transparent layers of the seashell, and reflects on the eye from the depths of the pearl.
  • The quality of the surface of the pearl : where the more the surface of the pearl is cleaner, the greater its value, and there are three classes for the quality of the surface of the pearl, namely:
    • Light defects on the surface of the pearl.
    • Medium defects on the surface of the pearl.
    • Clear defects on the surface of the pearl.
  • The quality of the shell of the pearl: The shell is one of the natural materials resulting from the secretions of the mollusk . The quality of the shell of the pearl can be classified into:
    • A pearl with a soft core, has a very slight shimmer.
    • A pearl with a visible core.
    • Pearl with a faint chalky look.
  • The symmetry of the pearl: Often there are no two identical or identical pearls, as when looking for two identical pearls, the factor of size, shape, color, and luster must be taken into account.

The most common source of pearls

The best oriental pearls are produced by mohair (in English: mohar) in the Arabian Gulf , as there is the largest harvest of pearls in areas in the peninsula from Oman to Qatar , and other prominent sources of good pearls include the following: [7]
  • Gulf of Mannar (English: Gulf of Mannar) which is located between India and Sri Lanka.
  • Sleepes (in English: Celebes) in Indonesia .
  • South Pacific Islands (in English: the islands of the South Pacific).
  • Gulf of California (English: the Gulf of California).
  • The Gulf of Mexico (in English: the Gulf of Mexico).

As for the saltwater pearls, they are all cultured by the Japanese, as they mastered the process of cultivating the saltwater pearls, and for the freshwater pearls they are produced by the Chinese, and the quantities of fresh pearls are much greater than the salty pearls, so their prices are much cheaper. [8]