Turquoise is easy to lose water due to more pores, which makes its luster and color dull, not as beautiful as before. In order to deepen the color of turquoise, people often dip turquoise into wax. El estándar nacional GB/T 16552 “Nombres de joyas y jade” stipulates that the immersion wax of turquoise is not optimized, but is treated. It must be marked as “waxed turquoise” o “turquesa (waxed treatment)” when naming it. Además, turquoise is often dyed or filled.
According to their structure, turquoise can be divided into crystalline turquoise, massive turquoise, reticulated turquoise and porphyritic turquoise. According to different hardness, block turquoise can be divided into porcelain pine and foam pine. The color of turquoise is an important factor affecting its quality. The best turquoise is the sky blue porcelain pine. The value of white turquoise is lower than that of blue and green. Además, their hardness, block size and pattern are also important factors affecting the quality of turquoise.
The main producing areas of turquoise are Iran, Estados Unidos, Egypt, Rusia, and China. The important producing areas of turquoise in my country are Hubei, Shaanxi, Henan, Anhui, Xinjiang, etc.. Entre ellos, Yunxian and Zhushan counties in Hubei are the most famous.
The price of turquoise is not high, and it belongs to low- and medium-grade gemstones among colored gemstones. In terms of style, it is often carved independently or made into beads.
Untreated natural turquoise will lose moisture and color because it is afraid of sun or water. Por lo tanto, wearing turquoise jewelry requires extra care.
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