The blue color of sapphire is favored by people, and it is also known as the blue elf in the gem, so it is a pleasure to buy a high quality sapphire jewelry! But what kind of sapphire can you count as a quality sapphire? What are the evaluation criteria for quality sapphire? Saturation, saturation refers to the vividness of color, also known as the purity of color. The degree of saturation depends on the ratio of the color component to the achromatic component (gray) in the color. High-quality sapphire, blue saturation is high, the human eye feels blue rich, on the contrary, the lighter the blue, the lower the value. Brightness is the perception of the light and darkness of the light source and the surface of the object. It can also be understood as the brightness of the sapphire color. High-quality sapphires, whose blue color is bright, of course, the concentration of blue and the cutting of the gemstone affect the brightness, but the value of the dark sapphire is reduced. Uniformity, because the sapphire ribbon is more common, the high-quality sapphire color should be uniform. Most sapphire can see the ribbon stain from the pavilion, but after cutting, the color should be uniform from the countertop. When the sapphire is viewed from the vertical table of the eye, if the ribbon and the stain are clearly visible, the quality is degraded. Weight is an important element in the evaluation of sapphire: the world's perfect ruby ​​up to 3 carats, sapphire up to 5 carats is very rare. The perfect sapphire larger than l0 carats, the price is more than 1 times that of the same weight diamond. The larger the gem, the greater the price per 1 carat. Therefore, when evaluating sapphire, you must pay attention to its weight. Cut: Sapphire has obvious dichroism. If you do not pay attention to its directionality when cutting, it will seriously affect the color and charm of sapphire, and it will not reflect the beauty and vividness of sapphire, which will seriously affect their price. In general, sapphire is cut into difficult, stepped and hybrid styles. The above is the information about the evaluation criteria of sapphire organized by Zu Gongju. The information comes from the Internet. If you have any questions, please forgive me. If you need to know the knowledge and consultation of Caibao Diamond, please pay attention to the official website of Zocai. Kay is waiting for you! Mens Pu Jacket,Men Winter Pu Leather Jacket,Hooded Men'S Pu Jackets,Men Baseball Pu Jackets Shaoxing Moonten Trade Co., Ltd , https://www.sxmoonten.com