玉手镯

岫岩玉山生水藏，质地坚韧，细腻温润，光泽明亮，色彩丰富。具有块度大、色度美、明度高、净度纯、密度好、硬度足六大特点，自古以来就是理想的玉雕材料。（Xiuyan Yushan raw water reservoir, the texture is tough, delicate and moist, bright and colorful. It has the characteristics of large block size, beautiful color, high brightness, pure purity, good density and hardness. It has been an ideal jade carving material since ancient times.）岫岩玉物质成分复杂，物理性质、工艺美术特征等亦多有差别，因而它不是一个单一的玉种。按矿物成分的不同，可将岫岩玉分为蛇纹石玉、透闪石玉、蛇纹石玉和透闪石玉混合体三种，其中以蛇纹石玉为主。据红外吸收光谱曲线图显示出蛇纹石玉组成，并含少量纤蛇纹石、胶蛇纹石。透闪石 ………………………………