Tuesday, July 26, 2011

The clarity of classification for colored gems

Rules of the clarity of colored gemstones are very different from those for diamonds. Learn how light gem dealers of colored stones like ruby, sapphire, emerald and aquamarine.

In the world of diamonds, clarity is one of the four "C" to determine the value, along with the color, cut and carat weight. Diamonds are graded for clarity only on a scale of Gemological Institute of America (GIA), developed from IF (internally flawless) to VVS1/VVS2 (very very slightly included)VS1/VS2 (very slightly included), and so on. Very small inclusions significantly reduce the value of a diamond.

Casio Dive Watch

Clarity is important in colored gemstones, but the rules are very different. Applying the rules of diamond colored stones, would be a mistake and lose the advantage of the buyer in many gemstones. In colored gemstones, it is color, is of paramount importance, and the inclusions are tolerated if they do not interfere with the beauty of the stone is not. In fact, for gemologists, the presenceInclusions distinctive colored gem is certified by the imperative of a natural stone.

There is no international standard for grading clarity in colored gemstones such as the International Classification System GIA Diamond. However, the GIA is to provide greater clarity of colored gemstones that to understand the consumer that there are different standards for different gemstone clarity helps introduced varieties. The varieties of precious stones GIA system fall into three types:

Type-1-precious stones are usuallyfound almost anywhere in the record market. High-quality copies of type-1-precious stones could only have small inclusions that can only be detected by 10x magnification. Well, when choosing a type-1-jewel, the buyer can expect that the gemstone that is nearly flawless. Type 1 gemstones are Aquamarine, Morganite, yellow beryl, chrysoberyl, Kunzite, Danburite, smoky quartz, blue topaz, blue zircon, white zircon and tanzanite.

Type-2-precious stones are usually found with inclusions and a high quality copyclean the eye, is not so perfect in the case of a type of acc. Type-2-apatite gemstones, alexandrite, corundum (ruby and sapphire), diopside, fluorite, garnet, iolite, peridot, quartz, most varieties (such as amethyst and Ametrine), spinel, tourmaline, most colors (with the exception of the watermelon and green) and red, yellow and orange zircon

Type 3 gemstones are almost always important inclusions. Even high-quality samples have inclusionseye. Type 3 gemstones emerald, red beryl, idocrase, Benitoite, kyanite, prehnite, sphalerite, titanite and tourmaline watermelon and rubellite.

These functional content of the terms that you say what you can expect to see when is the gemstone. They do not tell you if the stone has a special quality of the sample. You have to look at other attributes of the gemstone, especially its color and cut. And always check if the particular gemis a great test of that type. The GIA clarity to help understand species, where some inclusions should be expected, even in high-quality stones.

The clarity of classification for colored gems

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