Out in the field finds.

Recently found this signed Tiffany crystal vase, and ruby cased and cut crystal vase. $20 for both at local flea market.  You can never have enough vases.

Tip:  Most crystal vases, glasses, etc. are signed on the bottom, either etched, or acid stamped.  It can be difficult to read, or even see these marks, so take a magnifier glass when you go shopping.

Cased Glass:  glass consisting of two or more fused layers of different colors often decorated by cutting so that the inner layers show through —called also case glass (Merriam-Webster)