L257 Interi It's a natural gemstone that

It's a natural gemstone that is created when Prehistoric coral is gradually replaced with agate

It was found and saved from the historic flooding of the Arno River in 1966

With the unusual formation of sphalerite and galena

these Florence fragments in particular stand apart

248) on a coordinating polished agate base

L257 Interi It's a natural gemstone that18th century Italian wood chalice decorated with calcite crystals in sphalerite on a lucite base. The hand carved and painted chalice is from a church in Liguria, Italy. The calcite crystals formation comes from Elmwood Mine, Tennessee. It is an example of the world's finest crystallized calcite. With the unusual formation of sphalerite, it is unequaled by those from any other part of the world (referenced from the "American Mineral Treasure" book,