Is the platinum necklace quality? How is it bad?

I want to give a friend to give a platinum necklace to make a gift, but I don’t know how the value of the platinum necklace is? How should I be judged?

Platinum, Pt, is often referred to as platinum, but not all white metals are platinum. When buying platinum jewelry, you should look for the PT logo. The color and gloss of platinum are naturally natural, long-term. The hardness is 4 to 4.5 degrees. Strong ductility, can be pulled into a fine platinum wire; strength and toughness, it is much higher than other precious metals; the thermal conductivity is good; chemical properties are extremely stable, insoluble in strong acid strong alkali, no oxidation in air. Therefore, the quality of the true platinum necklace is very good, the color is bright, the chemical properties are stable, and it is not easy to fade.

铂金项链质量好不好?好坏怎么来判断?

If you buy a platinum necklace, you can identify the quality, we can identify yourself before buying: 2. Look at the mark: Platinum jewelery has a standard. Internationally in PT900 or PT950 is represented;

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