This nice material has been found in a very small quantity in the volcanic Italian island: Lipari, near Sicily.
The obsidian from this location is well know since roman’s time, this variety is quite rare. The small globular inclusions are made of rhiolitic composition,different from the matrix for a Sodium and Calcium proportion, furthermore some microcrystals were of Ulvospinel and Pyrossen . The result is wonderful: it looks like a view into the deep space.More informations on Rivista Gemmologica Italiana 1/2010
Weight: 8.62 ct.