Old Cristallo - Italy
Old cristallo glass - WINNER!
~ sea glass contest photo was submitted by Manuela Vetro , Italia (Italy)
WINNER of the Novemver 2014 Sea Glass Photo Contest
White Cristallo sea glass.
Notes from Wikipedia, the free encyclopedia:
Cristallo is a glass which is totally clear (like rock crystal), without the slight yellow or greenish color originating from iron oxide impurities. ~ sea glass contest photo was submitted by Manuela Vetro , Italia (Italy) Click here to see all the submissions to the Odyssey Sea Glass Online Digital Photo contests.
This effect is achieved through small additions of manganese oxide.
Often Cristallo has a low lime content which makes it prone to glass corrosion (otherwise known as glass disease).