Wood stone and tiger eye are medium-grade jade materials, which are generally used as necklaces and jade carving materials. The basis for evaluation and purchase: whether the texture is delicate, the color is light and the block size. Yellow, red, blue, fine texture, no voids, no impurities, the weight of 10 kg or more is a first-class product.
The difference between wood stone and tiger stone
Woodalexandrite is a quartz aggregate that retains the asbestos fibrous structure and is named because its color and texture are very similar to trees. According to the color and fiber arrangement, it is divided into wood stone and tiger eye stone.
Wood stone and Tigereye are actually a kind of "silicaized asbestos", which is made up of blue or green fibrous asbestos veins in rocks, which are replaced by acidic hot aqueous solution. Iron and magnesium in asbestos are precipitated and become It is formed by a pure SiO2 aggregate. If this silicified asbestos becomes a kind of jade, it is called a generalized wood stone. There are two main varieties of wood-to-stone: tiger-eye stone and eagle-eye stone, among which the yellow-brown wood stone is called tiger-clear stone, and the blue-wood stone is called eagle-eye stone. To be precise, both the wood and the tiger's eye stone (eagle stone) are quartz aggregates that retain the asbestos fiber structure.
Identification of wood and stone. The wood-to-stone and tiger-eye stones have special colors, brownish yellow, blue-brown, and obvious microfibrous structure and bright silky luster, which is not found in any jade in nature. The color of the wood stone and the tiger eye stone is relatively deep. To make it more beautiful, the material is placed in oxalic acid for half an hour before the finished product is finished, and a part of the iron is dissolved to make the color lighter. However, it should be noted that the finished product should not be placed in hydrochloric acid, otherwise it will affect the gloss strength.
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