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wholesale semi precious stones How to distinguish natural red and sapphire from artificial red and sapphire?

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More importantly: Put artificial red and sapphire on white paper or in the water in a white container to observe. The color bands or growth lines are mostly curved and curved, while the hexagonal growth lines of natural products are slightly curved. The ribbon is straight. Navíc, the fluorescence of artificial rubies is stronger than that of natural rubies, and the former is transparent red under ultraviolet light.

It is worth noting that when you encounter some red and sapphire that have been processed into arcuate shapes and it is difficult to find typical bubbles and cannot see whether the growth lines are bent or not, the problem is complicated, and you must be very careful. It should be sent to gemstone inspection experts for identification. Because the value of natural red and sapphire is often one hundred to ten thousand times higher than that of man-made products, a little negligence will be fooled.

Navíc, how to distinguish between natural star red and sapphire and synthetic star red and sapphire?

Natural star red, sapphire and synthetic products have the same origin. The difference is that the natural starlight gemstones (light bands) vary in thickness. At the intersection of the stars, the starline becomes thicker, forming a dense spot of light. Although the six-pointed starline is not as obvious as the artificial starlight gem, it flickers. Inside the gemstone (the so-called “depth”), the star line changes from thick to thin from the center to the edge, a “rotates” flexibly. The star lines of artificial star gems are thin, uniform and very clear, but they seem to be printed on the surface of the gem. So the two are easier to distinguish.

 

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