The formal jade testing agency's testing program for jadeite is to evaluate jadeite from the perspective of mineralogy, and to use scientific instruments to make a clear mineralogical judgment on the physical properties of jadeite. In general, a jade is sent to the testing agency, and the following procedures are required to reach the final conclusion. 1, shape. The description of the shape is relatively simple, and the language used is also a common noun word. 2, color. The words used for color descriptions are also more formal, and there are certain differences between the various image titles of colors in the commercial industry, and there will be no such titles as emperor green and apple green. 3. Total quality. Usually use the balance to measure the weight? 4, size specifications. Use a micrometer to measure the size of an emerald. 5. Density. Use a specific gravity liquid to measure density? Put the jadeite into the specific gravity liquid of different specific gravity. In the specific gravity liquid with the same proportion as the jadeite, the jadeite is suspended, neither sinking nor floating. The density of jadeite is between 3.25 and 3. 4 . 6, optical characteristics. Looking at the internal structure of jadeite with a microscope? The structure of the jadeite is a structure of a variegated interwoven structure in which fine-grained mineral crystals are intertwined around the transparent granular phenocyane. 7. Refractive index. Using a refractometer to measure the refractive index? Refractive index is a very important optical property of gemstones. Different gemstones have different refractive indices. It is possible to determine the exact gemstone by measuring the exact refractive index. The emerald has a refractive index of about 1.66. 8. Absorption spectrum. Using a spectroscope to determine the absorption spectrum of jadeite? The spectroscope can measure the degree of light absorption of jadeite at various wavelengths. 9, zoom in and check. A gem microscope that detects jade interior features and wear, polish and accidental damage. 10. Basis for inspection. "GB/T16552 jewellery and jade name", "GB/T16553-2010 jewellery and jade identification". gemstone pendant for decor JOYA GIFT CO.,LIMITED , https://www.joya-jewelry.com