Today, Anwar Wen Juan, a veteran player of turquoise, a national senior jewelry appraiser and appraiser, will tell you several common turquoise filling methods and how to identify them.
Qinjiao
The most common optimization is soft clay glue, also called Microsoft clay, which is aimed at turquoise with cracks and wires. Put the turquoise in the oven, remove the moisture in the turquoise, and then soak it in colorless resin to strengthen the overall structure of the turquoise so that it will not crack during peeling. The characteristic of micro-wetting is that the wetting time is short and the glue will not enter the interior.
Raw ore high porcelain high blue turquoise
Wax dipping
There is also a slight seepage, not glue, but wax. Boil turquoise in wax and polish it. Wax dipping is called waxing, waxing and waxing in jewelry industry, which can deepen the color of turquoise, close tiny pores, make gemstones unsuitable for dyeing, improve gloss and make turquoise brighter and smoother. Wax film helps turquoise keep moisture. If turquoise is not sealed with wax, after a period of time, dirt, sweat and grease cannot be removed after entering. Waxes used for turquoise treatment include solid paraffin, liquid paraffin and Sichuan wax, among which Sichuan wax has the best fusion.
Porcelain turquoise in raw ore
Brush coating
Brush glue means that when sculptors are carving, turquoise is easily broken during cutting, grinding and polishing. In order to improve the yield, turquoise is coated with a layer of glue before cutting, grinding and polishing.
Raw ore low porcelain turquoise
Glue injection
Let's talk about glue injection here, which is different from the previous one. It mainly puts pine with poor porcelain quality such as loose foam and loose surface into a pressure tank, and injects colored resin into the raw materials with a vacuum pump, thus changing the porcelain quality and color and pretending to be high-grade turquoise. This is not optimization, it should be classified as fraud.