The secret of raising black pearls

According to Tran Doan Thien, cultivating pearls is not simple. Pearl cultured clams must be over two years old, have been domesticated at the culture site, reaching a length of 17-18 cm or more to transplant 6-7mm nuclei.

Mr. Tran Doan Thien with colorful jewels from freshwater boys - Photo: Thu Thao

After nuclear implantation, the son was raised at least one week in clean water with continuous aeration and twice a day water exchange to monitor the rate of live and seeded mussels. Then put the mussels in hanging cages to grow under rafts, or trusses, or tie them into piles between the depths of ponds and lakes, about 1 meter to one and a half meters. Two weeks later, when checking the number of mussels, if the mussels live and suck the pearls, 60-70% is still satisfactory. After a month, the pearl membrane covered the entire pearl nucleus. After three months, you can observe the colors of the pearls in the coat.

When implanting a nucleus into a pearl oyster body, the nucleus must be placed in a place where the son can tolerate that strange thing in him, and the boy can release the motherland surrounding that nucleus. When implanting, it is necessary to gently, carefully, without injuring the inner organs of the boy. If not, the son will die or the pearl will become horn or jade with the color, the shape is not satisfactory.

The nucleus (strange object) is secreted by pearls to surround it. Before transplanting, the kernel must be washed with soapy water and rinsed with boiling water. After nuclear implantation, the son was raised at least one week in clean water with continuous aeration and twice a day water exchange to monitor the rate of live and seeded mussels.

After 24 months of good fattening, new mussels give 9-11 mm pearls, reaching the size of commercial pearls, with high economic value. Mussels used for transplanting must be strong, three years old, with a shell length of at least 12 cm, a height of 8 cm or more.

Some people have not researched and learned experiences about clam fattening method, before and after transplanting, especially surgical procedure of pearl implantation, but only look at other people transplant and follow, not according to the process should fail.

Mr. Thien said, he will train for any individual who is interested and willing to stick with the pearl profession.

The home address of Mr. Tran Doan Thien: 12 AB Cuu Long Street, Ward 2, Tan Binh District. Tel: 08 8442169.

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