In the division of gemology, gems are divided into diamonds and colored gems. Diamonds have a relatively complete grading system, especially colorless diamonds. Color gems are too rich in color, and their color levels are difficult to quantify. Approved evaluation method. Today, I will introduce you to the selection of colored stones.
First, the color - rich, even
Colored gems are popular with everyone because of their beautiful colors, so their color is still the most important basis for evaluation. The color is bright and uniform, the color is bright and the saturation is high, not too deep (light); The color distribution is even.
Second, the clarity - the naked eye observation, the cleaner the more childish
Under the premise of determining the high quality of the color, the less the inner enamel and the inclusions of the colored gemstone, the higher the value.
However, it should be noted that the classification of colored gemstones is carried out under the naked eye. Beginners can observe with a 10x magnifying glass, but the results are still subject to the naked eye, because colored gemstones are not as clean as diamonds.
Third, cut the work - to maximize the brightness, flashing of the gem
High-quality gems are bound to use high-quality cutting (except antique jewellery), and gems can only be used to maximize their beauty.
In the case of general production, the most high-quality gemstones will be cut into faceted gemstones, and the gemstones with insufficient color or poor clarity will be cut into curved gemstones and beads.
To evaluate a high-quality cut gemstone, it is necessary to comprehensively observe the proportion of the symmetry, high symmetry, and good polishing.
Fourth, the weight - the heavier the better
After the above evaluation level is determined, then the last item is the weight and size. Generally, in the case of the gem color, clarity, and cut level, the greater the weight of the gemstone, the higher the value.
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