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tungsten jewelry wholesale china
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The diamond waist code refers to the encoding of letters and numbers engraved at the diamond waist edge. It is to engraved the diamond waist edges through modern scientific and technological means, which is equivalent to the meaning of a diamond ID card. Because the diamond waist edges are thinner, the waist code is relatively small. Generally, it is difficult to observe with the naked eye. You can see it through other tools such as a magnifying glass.
gia diamond waist code is the most representative, and it is also a pioneer in the industry. Its technology is mature and the waist code is historically long. It adopts modern laser laser technology, with clear waist code printing and long saving time. In addition to the waist and edge, it is difficult to remove. This also makes each GIA diamond has its own identity coding and becomes a unique diamond. Every buyer can query detailed information such as diamond certificates through the waist code, and to a certain extent, it also provides a means of identification and guarantee for diamonds.