What is Crystal?

Here's another Vases 101 class.  What's the difference between crystal and glass?  Where can you make the best finds for crystal? Do you always have to make formal arrangements in crystal?  This post tells you the history of crystal, what leaded crystal is, and shows favorite arrangements in crystal.  Go ahead take a peek: http://www.floristinyou.com/crystal-vases

 What is Crystal?

What is Crystal?