Wood fossils are also known as silicified wood; chemical formula: SiO2.NH2O, belonging to the cryptocrystalline group, hardness: 5.5-6.5, specific gravity: 2.65-2.66, refractive index: 1.54 - 1.55. It is the geological change of the trees in the geological history. Finally, it is buried in the stratum and undergoes the chemical exchange and filling of the groundwater. Therefore, these chemicals are crystallized and deposited in the woody part of the trees, and the original structure of the trees is preserved, so that it is formed into wood. fossil. Ancient trees are submerged by water containing silica. The cells in the wood are replaced by the quartz stone, opal, etc. of the quartz family, so although the appearance of the wood is retained, it is essentially 100% stone (quartz). . Western mystics believe that the originally decaying wood has become an immortal gemstone after quartz replacement. Therefore, wood fossils are considered to have eternal, longevity and eternal energy characteristics. Usually wood fossils have many cracks or gaps. In some places, wood fossils have been replaced by other materials such as agate. These are natural products formed over a long period of time, not artificially filled, and should not be considered. For the sake of embarrassment, this is exactly what it is. Embroidered Dress,Embroidered Mini Dress,Floral Embroidered Dress,Embroidered Summer Dress SUZHOU DEVELOP TOGETHER IMP & EXP CO.,LTD , https://www.suzhoutaitong.com