Petrified rocks are fossilized pieces of wood transformed into stone over millions of years through a process of mineralization. They often retain the patterns and structure of the original wood while being composed of minerals such as silica, quartz, or iron oxide, giving them varying hues.
 In aquariums and terrariums, they are used to create natural and unique decors. Non-calcareous, they do not alter water parameters, making them ideal for freshwater aquariums and bioactive environments.