Jade Certification Fee

This fee is charged by the jade stone laboratory for certifying the jade piece, we provide the service to take it there. Their location is conveniently across from our jade workshop. Please see the pictures for the sample of what the certificate looks like. There are various laboratories that are widely accepted in our industry: - Hong Kong Gems Laboratory - Hong Kong Kowloon Jade & Jewellery Laboratory - Hong Kong Jade & Stone Laboratory Typically we use the most convenient one in terms of the time scheduling at that instance when we call for appointments. If you have a preference to a particular laboratory, please make sure to let us know in advance to avoid any misunderstanding. Thank you! **Further Information Below** Jade Certification: What is type A, B, C jade? In the marketplace of jade, any forms of treatment other than polishing is considered unnaturally and deemed low-value. Type A Jadeite – Natural form We consider this as the only accepted form that jadeite should be. Type A natural jadeite means that the subject qualifies to be free of any form of chemical treatment. As part of the polishing process, coating the jadeite with colorless wax is accepted so long as it does not damage the crystalline structure of the subject. After fine polishing, the jadeite item is dipped in heated wax of liquid form and once cooled down it is buffed to give a smooth lustrous look much like the process of car waxing. Type B Jadeite – Chemically treated and resin infused Type B jadeite means that the subject has been soaked in acid which removes impurities or oxidation stains producing a “bleaching” effect. This process lightens the color of many materials including jadeite and leaves many holes or micro craters inside throughout the subject. Next, it is placed into a vacuum chamber where polymer resins are infused into it and after the final polish the treated jadeite looks smooth and lustrous in color. Unfortunately, the appearance of Type B jadeite can change and deteriorate over time. The polymer resin can discolor and oxidize when exposed to heat and sunlight and turn yellowish. Type C Jadeite – Dyed coloring Typically, type C jadeite has undergone all the treatments of type B and with the addition of dyed coloring added to the polymer resin to produce an enhanced or additional coloring effect. Certain jade collectors look for jadeite items that come in three colors: green, white, orange or purple.