Northeast topaz, also known as yellow white old jade and river grinding jade, belongs to Xiuyu as it is a tremolite component, it belongs to Hotan jade. Xiuyu yellow and white jade are mostly "stone wrapped jade", commonly known as "river grinding jade", and the book name is "seed material". The surface of the original stone is formed by tens of millions of years of water immersion and weathering. The stone skin and yellow and white jade infiltrate each other and become sugar colored. This jade has high hardness, strong brightness and hardness of 6.36-6.46 on the Mohs scale. The texture is pure and fine, and the color is white and yellow. Most kinds of Xiuyu are serpentine, while the Northeast topaz is tremolite, which can be identified as Hotan jade (in a broad sense) Northeast Topaz and tiantopaz are not the same thing. Hetian topaz is rare and expensive.
Northeast old topaz is yellow and white old jade. Yellow white old jade belongs to a kind of Hetian jade in the broad sense. Most of them are "stone wrapped jade", commonly known as "river grinding jade", and the book name is "seed material". It contains the same tremolite composition as Hotan jade. Its texture is mild and its color is elegant. It has been loved by jade lovers since its birth p>
yellow and white old jade has high hardness and strong brightness. The hardness is 6.36-6.46 on the Mohs scale. The texture is pure and delicate, and the color is white and yellow. Because white jade will turn yellow over time, this kind of jade is called old jade p>
extended data strong> P>
origin of yellow and white Laoyu: the surface of the original stone of yellow and white Laoyu has been eroded and weathered by water for tens of millions of years, and the stone skin and yellow and white jade are infiltrated each other and become sugar colored p>
because of its long history of formation, the current science can't remember it, so "Laoyu" is named. In July 2001, Wang Shiqi, a professor of the Department of geology of Peking University, came to Xiuyan to conduct scientific research on Xiuyan Jade, and found a kind of tremolite top Xiuyan white jade. Its jade quality is the same as that of Xinjiang Hetian lanolin jade, which can be called Xiuyan "lanolin white" p>
this major discovery has set a milestone for Xiuyan Jade and raised Xiuyan Jade to the highest grade of jade in China. Xiuyan tremolite jade, namely Laoyu and hemo jade, is of the same quality as Hetian seed material in Xinjiang p>
reference source: Baidu Encyclopedia - Huang Bai Lao Yu
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