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wholesale sterling silver china Why are red and sapphire called “sister gems”?

Diposting di oleh Kingjy
Namun, this pair of gem “sisters” is not like the “husband and wife mine” realgar and orpiment, the “twin mine” galena and sphalerite often coexist together, but often live on one side. The reason is that the two are formed in different environments: rubies are mostly produced under geological and geochemical conditions that are high temperature and rich in aluminum and lack of silicon and contain chromium, while sapphire is often produced in high temperatures, rich in aluminum and lack of silicon, and contain iron and titanium. Under geological and geochemical conditions. No wonder that when a red sapphire conjoined with a rough stone weighing 13.5g was discovered in Changle County, Shandong Province in 1991, it was named “Mandarin Duck Gem” and reported as a rare miracle in the world. How to distinguish rubies produced in different countries? There are not many high-quality rubies in the world. Rubies traded in the international market mainly come from Myanmar, Sri Lanka and Thailand. The rubies produced in Mogok (or translated as Mogok) in Burma are mostly pigeon blood red, rose red and pink. The color is bright but uneven, and straight ribbons are often seen. Observed from different directions with the naked eye, two different colors can often be seen. The gems contain fibrous rutile inclusions to varying degrees, which is conducive to polishing a star ruby ​​ring. The rubies produced in Sri Lanka have rutile packages similar to those of Burmese products, and also contain porphyrite and apatite inclusions. Compared with Myanmar products, it has a lighter color and better transparency. Thai rubies are brownish red or rose red, with straight ribbons and growth lines, and less inclusions.

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