Gemstones are said to have different positive effects on us humans. The forces that they absorb during their decades of creation are given back to us humans when they come into direct contact with the skin. Petrified wood is also considered a healing stone and is used for a whole range of psychological and physical ailments. Stone: Petrified Wood Sphere Weight: 1323,04 g Size: 100mm Treatment: None Origin: Madagascar It is a fossil wood dating back 200 million years, all parts from a log or branches have been silicified, meaning that organic components were little by little replaced by silicon in the form of jasper, chalcedony and more rarely opal. Without the organic parts, all the living matter was replaced by stone : there are growth rings, cell separations, almost like worm cracks. Its features are those of the mineral that would have pseudo-transformed the wood : the silicon. And that’s what we call a "petrified wood" in the common language. The disclaimer about the healing properties as previously given : It is believed that certain gemstones and minerals have beneficial health and spiritual properties. We und Catawiki cannot guarantee or be held liable for these suggested attributes which have no scientific evidence and cannot be considered a substitute for traditional medical treatment.