Mr. Duc said that the pearl was about 2 cm (20 mm) in diameter, and was glowing, a clear reference to its flame structure. The irritant can be a parasite, damaging debris or waste material. Melo melo (common name: Indian volute) is a very large sea snail, a marine gastropod mollusc in the family Volutidae, the volutes. However, the crystalline form of calcium carbonate that is incorporated in the pearl is mainly calcite and not aragonite.

In clear seas the lower limit of this zone can extend up to a depth of 50 meters. Melo Hence the name zebra sea snail. The burrowing forms include heart urchins and the gastropod mollusks. Features: 15-20cm. Assael’s 23 mm melo melo natural pearl set in an 18-karat rose-gold pendant necklace with 209 diamonds ($750,000; available at Asprey, +44.20.7493.6767)  Vincent Pardieu, GIA Laboratory, Bangkok Copyright © .Internet Stones.COM. restaurants and tourist shops were located.

The large fleshy foot of the snail is brown in color with white stripes like a zebra. Tahitian black pearl drop earrings set in 18-carat white gold from YOKO London’s new Glacier collection ($19,000)  Vietnam being the primary source of Melo melo pearls, the pearls are also sometimes referred to as Vietnamese orange pearls.Young Melo melo sea snail on the shores of Beting Bronok, SingaporeIn Burma, Melo melo sea-snails are found along the Arkan coast, in the southern region of Dawei, the Mergui Archipelago, and Kawthaung in the Andaman Sea near Thailand.

Hydraulic dredges that shoots jets of water, onto the seabed to lift out the target species have also been developed. Melo melo is a very lovely snail with a smooth oval shell of orange and cream and with zebra stripes on its soft body. Also traditionally utilized by the native fishermen to bail out their boats (Ref. The interior of the shell is glossy cream, becoming light yellow near its margin. Among the invertebrates are burrowing and sessile organisms such as sponges, and bivalve mollusks, and burrowing and creeping organisms such as gastropod mollusks, the bailer volute being one of them. This magnificent large snail sometimes seen on our Northern shores and is more common on undisturbed shores. All the concretions produced by molluscs with shells are pearls, whether they are nacreous or not. The sea-snails are found in sandy and rocky areas at depths of 20-30 meters.

Desmond, now living in Vietnam, contacted me here at KariPearls....There was a time when these types of pearls were not even called pearls, but that has changed now. This gives an indication as to the true rarity of melo-melo pearls.In the early 1990s the Vietnamese began intensive harvesting of Melo melo sea-snails using trawlers and dredgers, around the snail-rich waters of the Spartly and Paracel archipelagos in the South China Sea, the Back Long Vi Island in the Ha Long Bay, and the Phu Quoc Island near the Cambodian border. Although melo-melo pearls had been known and appreciated in Southeast Asia from time immemorial, its sudden worldwide popularity is of recent origin, attributed to a New York gem dealer and writer Benjamin Zucker. The calcite microcrystals are laid as needles and do not scatter light waves like aragonite platelets. The organic component of nacre is the scleroprotein conchiolin, while the inorganic component is crystalline calcium carbonate, mainly aragonite together with some calcite. The Pearl: Melo melo pearls are produced by the melo melo sea snail, which can be found in Southeast Asia—specifically, the South China Sea, the … The mantle is responsible for the creation, maintenance, coloration and modification of the gastropod shell. In fact, the Gemological Institute of America has recently placed a ban on the differentiation between (nacreous)pearls and (non-nacreous) concretions. www.wildsingapore.com13) Melos and their Pearls in Vietnam - May/June 2009- Concise Field Report, Volume 2, Part 1. Accordingly, in keeping with the prices realized at the first auction, the auction house placed a higher pre-sale estimate of USD 150,000 to 200,000 on the pearl. Sometimes the shell has dark brown bands while others are without any distinct markings. Please go to the following webpage for the computation of the probability of quahog pearls :- For quahog pearls the frequency of occurrence of a purple pearl was given as one in 100,000, out of which only one in 20 was said to be of gem-quality, giving a probability of 1/100,000 x 1/20 = 1/2,000,000. The peak fishing period for melo melo snails is around April. Aragonite is found mainly as tiny hexagonal platelets with a  width of 10-20 µm and thickness of 0.5 µm.These platelets are arranged in parallel lamina, separated by conchiolin.

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