Comparative Law
Platinum with the naked eye was gray, hard texture is more, the hardness of 4.3. Silver with the naked eye, the color was clean white, Cheap Oakleys Holbrook Sunglasses Outlet Store smooth and delicate texture comparison, the hardness is lower than platinum, hardness of 2.7.
Look Chop
Because each piece of jewelry must be stamped seal ingredients, so whenever you see a pt, or to see a platinum, plat, that is platinum; If seeing s, or see the silver, it is silver. In addition, silver-plated copper symbol to note that it is sf.
Weigh
If experiencing blurred seal or seal has been truncated, you can use this method. Platinum's high density, specific gravity is 21.4 kg / dm 3, the proportion of silver is 10.49 kg / dm 3. Thus, the same weight is only half the volume of silver platinum, a comparison between the two is easy to identify.
Cremation Act
Sometimes encounter fewer materials, obvious feeling of weight on the hands, while no seal, then had to use this method. Heat or fire Tiffany and Co Bracelet Jewelry Outlet platinum After cooling, the color is unchanged; heating or fire and silver, after cooling, was run on a red color, or black and red.
Chemical method
The touchstone of platinum on a grinding mill, then with nitric acid, hydrochloric acid droplets mix a few drops, if the wear scar exists, it means platinum, as the level of fineness, but some differences in color; If this drops on silver, mill marks will be dissolved lost.
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