Hello, I read Wolfers' report about Derain in fashion COSMO magazine before, saying that all their products are made of high-quality American diamonds, with white color, high purity and good cutting. The noble quality of their diamonds is guaranteed by almost harsh selection. In the process of making diamond ornaments, the technological process is also quite complicated. The process of each link has the strictest specifications, and no mistake is allowed to destroy the perfection of diamond ornaments. Insist on perfect craftsmanship, perfect craftsmanship, perfect details, and make the most perfect artwork. So your wife is right!