There are differences in size and value of cultured pearls.
For general pearls, no matter artificially bred or naturally formed, the size of pearls with a diameter of 0.4-1.0cm is the most common, and the smallest pearl, such as corn, is called corn pearl.
The size of cultured pearls is not only related to the length of culture cycle, but also related to the secretory capacity of pearl sac and the specification of inserting small pieces.
Nucleated pearls are also related to the size of the inserted core. The size of the transplanted piece is large, the secretory force of the pearl is strong, and the deposited pearl is of much quality, so the particle size of the pearl is large; the size of the nucleus is large, and so is the pearl.
At present, the division of the size of cultured pearls is that the diameter of large pearls is more than 8.5mm, and that of middle pearls is 6.9-8.4mm.
The diameter of beads is 5-6.8mm.
The diameter of fine beads is 2.6-4.3mm; pearls below 2.6mm are called fine beads (also known as fine beads).
If the diameter and size of pearls are different, their values are also different. The bigger the pearl, the higher the value!
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