Identification of coral-www.winbowgems.com gemstone wholesaler

Identification of coral-www.winbowgems.com gemstone wholesaler
Buy coral should pay attention to three points, one to color uniformity, second, color Hongyan, the more red the more precious, than the third major, the more serious the better.
Coral appearance somewhat similar to the different colors of pearl shell, shell pearl’s luster a certain direction, when the low times magnification, shows a very like flame graphics. Shell pearl shell with fake white refined into white coral beads, by the shell structure and the parallel growth of pink banding to identify trends.
Other identifying characteristics of coral is a small, shallow circular pits, which is part of the individual coral growth. Perforated by a certain type of marine life can also be caused by the existence of small pits.
The main alternative imitation coral material is celluloid, wood and sealing wax, none of which have the unique look of coral. Celluloid issued camphor odor when heated, the wood can be used fingernail scratch, exposed man-made wooden structures under the surface, sealing wax was flow in the shape of the glass under the magnifying glass appearance. If necessary, hydrochloric acid can be used to identify these proxy materials, because no one of them will work with hydrochloric acid. On the contrary, corals, shell pearls and pearl shell shell both react with hydrochloric acid.
As the production of red coral small and high value, so people often use the cheap white coral dyed red to take that natural red coral. To identify the fake red coral, can be rubbed with a cotton swab dipped in acetone under the dye. As the color of artificially colored fake dull monotone, duplicity, with 10 times magnifier visible dye in the small cracks in the coral and intergranular concentration, deep inside its a red light to show uneven coloring
The flaw.
Differential staining of coral depends on its level of staining. Any staining, not soft natural luster, over the sexy, red is not level, but was really red coral red candles, red has layers, and some red and white, middle vaguely reveal “fingerprint” (the texture of coral calcium and human fingerprint similarity) compared with staining imitate, quite different. jewelry supplier china jewelry supplier
Is not smooth is a fake, but the red coral is a protected species at the national level, without state issued permits are not allowed to sell, so there is no license to sell 99% of businesses are not real red coral of Taiwan. You have to distinguish carefully, beware fooled.
Coral branch is not within the solid.

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