Sapphire is the common name for corundum gemstones of colors other than ruby, the main component of which is aluminum oxide (Al₂O₃). Blue sapphire, is due to a small amount of titanium (Ti) and iron (Fe) impurities mixed in. The color of sapphire can be pink, yellow, green, white, or even multiple colors in the same stone. ❄️
The royal blue and cornflower colors, which are intense but not black, are the best among sapphires. When cut in a curved plane and enriched with three groups of inclusions arranged in parallel and in a directional manner with the bottom surface, a beautiful six-shot starlight can be produced, which is called "star sapphire". ✨
[Origin].
There are few sapphires in the world, mainly from Myanmar, Sri Lanka, Thailand, Australia, China, etc. However, in terms of gem quality, Myanmar and Sri Lanka are the best. According to the different geological causes, it can be divided into two categories: one is the sapphire produced in Myanmar, Sri Lanka and Kashmir, India. The other is sapphires from Australia, Thailand and China.
Sapphires from different parts of the world also have their own characteristics depending on the place of origin:
① Burma and other properties of the sapphire, because of the titanium color, it is bright blue, with sericite rutile and fingerprint liquid inclusions.
Kashmir sapphire. The color is cornflower blue, that is, slightly violet indigo.
③ Sri Lankan sapphire has silky inclusions, similar in characteristics to Burmese sapphire, with the difference that the fibers are thin and long, and can show six-shot starlight.
Thai sapphire. Thai sapphire has a blackish blue, grayish blue color. There are no sericite inclusions in the crystal, but fingerprint liquid inclusions are developed.
⑤ Chinese Shandong sapphire, with high iron content, mostly indigo, blue, green and yellow color close to charcoal black. Indigo blue is predominant.
[color].
The main colors of sapphire are blue, pink, white, green, orange, yellow and purple.
[Selection of Sapphire].
①Color
The colors we hear most often are "cornflower" and "royal blue". These two different colors, there is no difference between high and low, "cornflower" will be fresh, bright and sweet, "royal blue" will be more deep and calm, according to personal preference to choose.
Clarity
Sapphire can be seen through the gem his color distribution, this is due to the formation of the sapphire growth process, is a normal situation, in the selection process, to avoid the naked eye obvious color band and obvious color unevenness can be.
③Cutting
Good or bad cut directly affects the color and fire of the gemstone, good cut ratio, can repair the color of sapphire, can improve the brightness of the gemstone, so that the crystal is more translucent. Therefore, besides color and clarity, cut is also one of the very important factors.
If you are lucky, don't hesitate to come across a gemstone with a rich color, a good cut, an acceptable clarity and a reasonable price!
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