Foreign countries pay attention to authenticity, mainly artificial gem. Because foreign artificial gem also has a certificate.

Swarovski is an artificial crystal. Is a broken diamond a diamond? Is sapphire artificial?

Any color description may be inaccurate.

Also, metal materials are very important. Platinum, 18k, silver, the price difference is much more.

If the color is bright, it can be sure that it is true. The metal is 18k or platinum, which can be considered.