Geode dragons are closely related to stone dragons .
晶体龙与石头龙是密切相关的。
The biggest amethyst geode in the world .
号称世界最大的紫色水晶。
Topaz belong to spar so also need demagnetization , but topaz crystal department can 't use because orthogonal geode , jing clusters etc. the topaz .
黄玉属于晶石所以也需要消磁，但是黄玉因为正交晶系不能用晶洞、晶簇等黄玉。
The geode , which is eight metres ( 26ft ) long and crammed full of gypsum prisms , has been put under police guard to prevent souvenir hunters from raiding the extraordinary natural phenomenon .
