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The criteria for evaluating crystals are different from those for high-end gems. Most high-end gems place color at the top of their evaluation, and for crystals, color and clarity (known in the crystal industry as crystals) are almost as important: color Color is very important for any gem, and...

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The criteria for evaluating crystals are different from those for high-end gems. Most high-end gems place color at the top of their evaluation, and for crystals, color and clarity (known in the crystal industry as crystals) are almost as important:


color

Color is very important for any gem, and crystal is no exception. If the crystal crystal is colored, such as pink crystal, yellow crystal, amethyst, etc., the highest standard of color evaluation is bright and attractive, not with gray, black, brown and other colors. For example, pink is the best color. Amethyst, request color is fresh purple, pure do not hair black; Yellow crystal, requirement color does not contain green, lemon tonal, with golden orange color is better. Color is also important for hair crystals. The gold hair crystal of same hairline, crystal is completely colorless (white crystal) and crystal slightly slant tea color, visual perception of naked eye also has difference, so former price can be higher than latter.


clarity

The clarity requirement of crystal and high-grade gem is very different. High-grade stones are rare and rare, so the general public is not too strict on the cleanliness of high-grade stones. The amount of crystal produced is so great that it is usually required to keep the crystal as clean as possible and to avoid crystals with obvious contents.


impurities

If the impurities within the crystal contain the shapes of legendary characters, such as Buddha, constellation and zodiac, the value may be higher than the same color and clarity of crystal.


The state has not yet provided a specific grading standard for natural crystals, with a variety of crystals, each of which has its own criteria. 


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