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1. How many colors does sapphire have?
Although sapphire is a blue word, it is not only a blue color. In fact, sapphire is a general term for other colors of corundum except ruby. So in addition to blue, there are pink, pink, yellow, green and white sapphires. Among these colors, blue is the most popular. But pink and orange sapphires are also very rare and of high value.
Second, where is the quality of sapphire produced better?
The main producing areas of sapphire are Kashmir, Sri Lanka, Thailand, Myanmar, Australia, and Shandong Changle. Among them, the sapphire of Sri Lanka and Kashmir is generally indigo blue with a slight purple color. The color is bright and pure, the transparency is high, the quality is very good, and it is worth collecting. The sapphire in Australia and Shandong Changle is common in the market, but they have poor transparency and impurities, and the merchants will optimize their methods to make them lighter and lighter. Therefore, the Changle sapphire we have seen is generally optimized.
Third, if the business is full of money, how to identify it?
This is indeed the case. The more common replicas are crystal, topaz, zircon, fluorite, and glass. However, imitations cannot mimic the hardness and density of sapphire. In addition to diamonds, sapphire is the hardest mineral. The hardness of a diamond is 10, the hardness of a sapphire is 9, and the hardness of a crystal is 7. Therefore, sapphire can be used to draw glass, imitation can not, can be regarded as one of the identification methods. Second, the official agency's certification is also a guarantee of sapphire quality.
4. What is the optimization of sapphire? Is the optimized sapphire low value?
This method is very common. It can be said that 90% of the sapphire on the market is optimized, and there are very few natural ones. It is to change the color of the gem by heating, also called heat treatment. Since optimization is a very common practice, it does not change the structural quality of sapphire, so according to international practice, the optimized sapphire can be sold without explanation, and the identification certificate can be omitted. If you simply say "handling", then the method is not only heated, but also filled with dyeing, etc. These beautified processed sapphires are marked with the word "sapphire (handling)" on the certificate of authentication.
5. What are the criteria for choosing sapphire?
Of course, sapphire is still selected according to the 4C standard. 4C: color, clarity, cut, weight. The first thing to look at is color and fire. The brighter the color, the more pure and uniform, and the higher the saturation, the more collectible the gemstone is. Second, look at the clarity, that is, see if there are impurities, flaws and cracks. Then we look at the cut. If it is a faceted sapphire, look at the symmetry of the facet and the proportion of the overall gemstone cut. Finally, the sapphire is as good as possible in the first few conditions.
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