Gloss and transparency: the luster of jadeite is glass luster, greasy luster or greasy glass luster, and the transparency is affected by many factors such as the particle size, bonding mode, cracks and color depth of its constituent minerals. Most jadeites are translucent to opaque. Transparency is also called "water head" in the traditional jade industry and is still in use today. High transparency is called "good head" and "long head". Transparency is also an important factor to evaluate the quality of jadeite. More professional analysis, you can go to the jewelry website to see. Www.glyls.com, this website is very professional. Go and have a look when you have time.