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Natural sapphire color are often uneven, with most of the flat growth profile. Man-made sapphire color line, its growth profile for the arc zone, often visible in bread crumbs-or-the-bubble.

Natural Sapphire also has obvious two-color, from a look at the direction of the blue, from another direction to see is blue and green. Other precious stones of color and different natural sapphire, which can be distinguished.

In addition, the most simple method available hardness of law, natural sapphire, topaz can be described in a trace, while other blue topaz gemstones difficult to trace on the characterizations, the purchase of jewellery, such as the side did not machines, as long as there is a topaz And sometimes also to solve some problems.
[Added] explained sapphire
Sapphire the English name for the Sapphire, from Latin Spphins, meaning blue. Sapphire name for the mineral corundum, the mineral corundum family. Currently gem industry to Ruby, the other colored gem corundum collectively known as Sapphire.
Sapphire for the chemical composition of aluminium oxide (Al2O3), due to trace elements of titanium (Ti4 +) or iron (Fe2 +) and blue. Fang Jing of the three. Chang Cheng-crystal form cones, short column, plate, geometry for more granular or dense block. Transparent to translucent, glass luster. Refractive index 1.76-1.77, double refractive index 0.008, 2-strong. Non-homogeneous body. Sometimes a special optical effects - Stars effect. 9 hardness, density 3.95-4.1 g / cc. No cleavage, splitting arguments development. Under certain conditions, can produce beautiful six radio star, known as the "Star Sapphire."
Sapphire blue sapphire and can be divided into Yanse (blue) sapphire. Color to the Indian middle class "cornflower blue" for the best. It is said that King and sapphire to protect monarchs from harm, "the emperor stone," said. Sapphire gemstones to the international community as "September birth of Stone", the symbol of love, loyalty and Jianzhen. Sapphire is one of five valuable high-grade gemstones.
Sapphire evaluation and purchase. Sapphire evaluation and purchase is the color, weight, and transparency of the net. Sapphire is the biggest characteristic of uneven color, not double-crystal-film development, the strong color. Myanmar sapphire in the middle, a bright blue (including the color of titanium), because of inclusion, can produce six or 12 radio Radio Star. Indian Kashmir sapphire, a Cornflower blue, purple is the microstrip Dian Lanse, bright colors, a high-quality sapphire. Sri Lanka, Thailand, China, Australia production of sapphire is also unique. Sapphire is brittle, they should wear should avoid setbacks, Kepeng.


In nature, and emerald green transparent similar to many types of gems, jade is more common, tourmaline, fluorite, peridot, garnet and zircon, which look like the emerald and is easy to confuse the tourmaline, Jade and fluorite. To eye, emerald green translucent都呈-general, are often intertwined fiber spot-like structure, and quality emerald transparent crystal. The hardness of 7.5-8 emerald, and fluorite hardness low, only 4. Emerald smaller proportion, and fluorite, tourmaline, emerald larger proportion of all. Zircon is a clear and strong dispersion of the double-shadow.

In addition, there are natural and similar to the emerald manual emerald green glass, the biggest difference between them is the natural emerald of the vast majority of flawed or inclusion, and that two of the color. Of course, it is necessary to strictly distinguish between the best use of the correct discount spectrometer, polarized light microscopy, and other identification equipment.