Download Pearls. Natural, Cultured and Imitation by Alexander E. Farn PDF

By Alexander E. Farn

Pearl: average, Cultured and Imitation discusses a few facets, contrast, and authenticity of pearl. This booklet is split into 10 chapters that hide the beginning, anatomy, resources, and costs of this valuable gem.
The first 5 chapters are dedicated to traditional pearls, their distinct gains, beginning, background, constitution, anatomy, and resource. the subsequent chapters hide cultivation and checking out of cultured pearls, in addition to their industry price. A bankruptcy makes a speciality of the homes of assorted imitation pearls. The concluding chapters take care of the pricing of pearls, based on an intricate strategy utilizing a base fee known as the “unit base price”. those chapters additionally think about different pearl makes use of except necklaces, similar to borders to brooches and festoons.
This booklet could be of significant worth to pearl investors, brands, and clients.

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Extra info for Pearls. Natural, Cultured and Imitation

Sample text

Two half gills to each side of the body. Breathing and feeding All living organisms must breathe and the gill plates, which perform the same function as do the lungs in mammals, extract oxygen from the sea water and pass out carbon dioxide from the process of respiration. e. there must be a flow or current movement, and the gill plates achieve this in an interesting manner. The plates are composed of a number of filaments hanging side-by-side which are joined by delicate hair-like processes, giving an appearance of a firm, sickle-shaped plate.

Blisters on the pearl shell sometimes contain pearls; even the blister itself is cut out for appropriate use. The soft parts of the oyster are discarded and the shells are left to dry out, especially the ligament of the hinge. This allows the shells to be parted without injury to the brittle mother-of-pearl. Australia 43 The yellow pearls found in the P. carchariarum of Shark Bay reefs were fished by means of light dredges. After the shells have been opened with a knife, the soft parts are scooped out, placed in tubs, and allowed to putrefy under the hot sun.

Gulf of Mannar (Sri Lanka) Similar conditions of paars and oysters exist on the Sri Lankan side of the Gulf of Mannar where the chief port for pearl fishing is a temporary settlement which springs up at Marichchukkaddi, in the north west of the island. It is temporary because, like the Indian paars in the Gulf, the Sri Lankan paars suffer the same vagaries of production due to the tidal flow, silting, predators, etc. Like the Indian fisheries, these came under British rule in 1796; and again government reports were made of the state of the paars.

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