NGTC identification certificate. NGTC is one of the top international laboratories accredited by Catawiki. Certified items can ensure the accuracy, fairness, and traceability of products. Digital certificate link: https://ecard.ngtc.com.cn/page/detail-cer-other?c=STZB0089&v=29877532 Weight: 10.13 g Size: 33*21*11 mm Natural crystals. Adopting hexagonal star facet cutting, the transparent crystal can refract light well, presenting a clear and shiny texture. The common fine cotton fluff and ice cracking of natural white crystal can be seen inside the crystal, which is a typical feature of natural crystal. Hexagonal stars are regarded as symbols of energy protection and balance, representing the connection and fusion of energy between heaven and earth, with the meanings of "guarding" and "purifying". White crystal is believed to purify negative energy, enhance concentration, and amplify the energy of other crystals. It is often used in meditation, energy therapy, and daily wear to help stabilize emotions and clarify thoughts.