In addition to the flaming CVD synthetic diamond incident, some gemstones that are very similar in appearance to diamonds are also to be watched out. For example, the star stone, then, what is the difference between a diamond and a star stone?
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The star stone is the language of the mall. The academic name is synthetic carbon silica, but it is like a diamond. It is more like CZ Soviet diamond (synthetic cubic zirconia). It is more necessary to recognize the dream. The difference between them.
The difference is one: hardness. Diamond: Mohs hardness of 10, Moss stone Mohs hardness of 9.25. The two are very close, but only diamonds can scratch the star stone.
The difference is two: fluorescence. Moss stone: long, short wave is inert to moderate orange; diamond: long wave response is greater than short wave, all colors have (change)
The difference is three: the specific gravity. In the 3.32 pycnometer, the magnolia with a specific gravity of 3.22 will float, and the diamond with a specific gravity of 3.52 will sink.
Difference 4: facet quality.
Moss stone: 1, the quality of the facet polishing is not as good as the diamond 2, the faceted edge is rounded, the facet edge can not be gathered a little 4, the facet is polished and consistent.
Diamond: 1, faceted polished perfect 2, faceted sharp edge straight 3, faceted edge gathers a little 4, facet polished edge direction is inconsistent.
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