Emerald is one of the most precious gems, its green pure, rich and gaudy and beautiful, is the king of the green gems. Emerald many kinds, the most famous are parrot green, there are bright colors such as peacock feathers of the Yen, so that the “Emerald.” Emerald Green in the highest, its green is due to trace amounts of chromium-containing lead, the green crystal-yan United States, hardness, high refractive index, the transparency better.
According to research, emerald came via the Silk Road in China, and time can be traced back to China and trade exchanges between the Han dynasty of Persia. Emerald is known as probably occurred in the sixteenth century, this word is derived from the ancient Persian emerald. Emerald is one of the most valuable gemstones, it has been among the few precious stones of the column. The best emeralds in Colombia emerald. The region’s products, high quality, color clear, in order to settle mostly in green, as well as Shaodai Shaodai blue-green or yellow green. Baxi Ba dark places, Kana Ba, according to Tanzanian emerald Butler, general talk about the color lighter, and lower density. In order to improve the economic value of businesses to some of the Brazilian emeralds re-processing, such as the Baptist colorless oil, injection molding and so on. This process, non-experts can not distinguish. Russia, Siberia, emerald, mineral produced in the Ural region, most with yellow, and was accompanied by more flaws, and the color of light on Colombia’s emerald. Zimbabwe emerald, produced in Zimbabwe BelingiveNatireReserre area, high-quality varieties less frequently defective crystals. In color, occasionally some of the beautiful deep emerald green. Tanzania, emerald, produced in Tanzania Mangara the south bank of the lake area, and biotite-kin from the rocks found in the contact zone, their quality and Colombia Mufo similar gems. Is usually a yellowish green, sometimes there with a blue-green varieties. There Zambia emeralds, most of them presented with a slightly gray hue, and may be found in which the yuan mother, hornblende, actinolite or tremolite inclusions.
A lot of emerald origin, Colombia naturally the best, other sources have high quality goods produced by emerald. Identification of the elements of quality emerald first color, the green to be positive, rich and gaudy green colorful, texture transparent, less impurities, be clean. Typically, the emerald of the texture of “wing-pattern”, just like flies, like the wing pattern, showing a transparent state of the ice cracks. Emerald Though high hardness, but brittle, the structure was flaky, easily peeling impact. Emerald also has a new pit Lo Hang Mei Sik distinction. Lo Hang Mei Sik permeable strong, high hardness, the new pit less permeable material, hardness lower. Emerald influence the value of good and bad, Lo Hang Mei Sik transparency, good, rich and gaudy colors, texture clean and no impurities, no films were crack of varying value can be compared with the precious diamonds; low value and vice versa.
There are many imitation products emerald. More junior green glass imitation products, it is very easy to identify the most important difference is that the glass has bubbles, emerald does not. There are in proportion, refractive index, hardness, both embody a difference. Glass weight lighter than precious stones; gems are birefringent, glass does not; glass hardness is lower than precious stones, and some are showing surprising flaws angular edges. More advanced Imitation is pretending to emerald green tourmaline, green tourmaline gemstones are also light, but the crystal is a multi-cylinder-shaped, crystal face with vertical stripes, with some needle-like crystals inside the capillary, this and the wing pattern The emerald has a distinction between the nature of the structure. In addition, the color of green tourmaline was dark green to yellow-green, not green with yellow, that is green in the blue. There is also a difference, emerald few large particles, while the green tourmaline is relatively speaking, great shape, block surface thickness.