Topaz was the best in ancient times, followed by suet jade, which once exceeded the price of suet jade. But in recent years, the price of Hotan topaz is not very high. At present, topaz on the market can be divided into yellow skin ooze and topaz raw material. The value of primary topaz is relatively high, and the price of wampee is about one gram in 500 yuan.
Topaz was only hidden and traded as an ornamental stone before it was developed into jade, and it was called yellow wax stone. Because of its delicate stone, golden color, huge block shape and rich changes, it has high ornamental value, reaching thousands or even tens of thousands of yuan per kilogram.
Topaz process
The popular styles of topaz are emerald cut and round cut. In the process of machining, because topaz has cleavage parallel to the bottom surface, attention should be paid to directional cutting to prevent the grinding surface from being parallel to the cleavage surface, which makes it difficult to grind and polish. The reasonable orientation is 12 degrees-15 degrees formed by the grinding surface and cleavage surface. Due to the existence of topaz cleavage, care should also be taken when inlaying to avoid damage.
From the color point of view, purple topaz has the highest price, and good quality is expensive. Followed by pink, brown, blue and yellow. Colorless topaz has the lowest price. Topaz often contains gas-liquid inclusions. Clean topaz is rare. The price of inclusions is low. Topaz with higher price has bright glass luster.