Berita perhiasan

customized jewelry How to distinguish emeralds, natural cat’s eye stones, dll.?

Diposting di oleh Kingjy

But their chemical composition and physical properties are very different. Misalnya, emerald has a hardness of 7.5-8, while fluorite has a hardness of 4; emeralds have a density of about 2.7g/cm3, while fluorite (3.18G) /cm3), Turmalin (3.05g/cm3) and emerald (3.33g/cm3) have higher densities. In the indoor test with tribromomethane, only emeralds floated up, and the others sank. Emerald green emeralds resembling emeralds are generally translucent, while high-quality emeralds are transparent and can be distinguished by careful observation.

How to distinguish natural cat’s eye gemstones and artificial cat’s eye gemstones?

Dalam beberapa tahun terakhir, an artificial opal ring surface made of glass fiber has been sold in the market in China. Its colors are red, blue, light green and brown. Diantaranya, the brownish varieties are like natural cat’s eye gemstones, and some are inlaid. On a gold or silver ring stand, it is even hard to distinguish between true and false when worn on the hand. It is easy to judge that it is a man-made product from its low price, but if someone pretends to be a genuine product and greatly increases the price, how can it be quickly judged? The main differences are:

(1) When the ring face is rotated, the artificial opal can simultaneously show 2-3 bright bands at the top of the arc, while the natural opal has only one bright band.

(2) Natural opals can show liveliness, while man-made products appear dull and lack beauty.

 

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