Jade, also known as jadeite, jadeite and Burmese jade, is a kind of jade. The correct definition of jadeite is fibrous aggregate composed of pyroxene minerals, mainly jadeite minerals. But jade is not equal to jade? . Jadeite is a kind of stone polycrystalline aggregate that reaches the jade level under geological action. It is mainly composed of jadeite or jadeite, sodium (sodalite) and sodalite (omphacite), and may contain amphibole, feldspar, chromite and limonite. In ancient times, jade was a bird that lived in the south. Its coat color is very beautiful, usually blue, green, red and brown.
Generally speaking, the identification certificate of natural jadeite (A) will be marked with jadeite, natural jadeite, jadeite (A) and jadeite (natural), while products B and C will be marked with jadeite (treated) or jadeite (optimized). National Inspection Certificate: National Jewelry and Jade Quality Supervision and Inspection Center (NGTC) is a national-level jewelry and jade quality inspection institution authorized by law. It has passed the qualification certification (metrological certification, authorization and approval) and laboratory approval of the national product quality supervision and inspection institution, and is the authoritative institution for jewelry and jade jewelry inspection in China, and has been designated as the national scientific and technological achievements appraisal institution, import and export commodity inspection laboratory and commodity designated laboratory of China Consumers Association. The style of the national inspection certificate is unified throughout the country, and there is no regionality.
Illustration and appraisal certificate of natural jadeite: