Submitted by khenkes on Fri, 01/08/2021 - 10:01
Describes the many different kinds of stones, where they come from, how they were made, what they are made of, and some of the surprises they conceal.
Submitted by khenkes on Wed, 08/09/2017 - 11:25
Describes the many different kinds of stones, where they come from, how they were made, what they are made of, and some of the surprises they conceal.
