Things You'll Need
Instructions
Look at cut glass collections in museums and at conventions and shows. Become familiar with what high-quality cut glass looks like.
Examine all pieces carefully. Notice whether they have any damage. Older pieces should be expected to have minor damage.
See whether the piece is clear, has a natural gleam and is of an even weight throughout the piece.
Tap the piece with your fingernail and listen for a sound similar to that of a bell.
Learn what types of cut glass are rare. Expect to pay a higher price for those.
Purchase a cut glass book and read it closely, paying attention to the photos and prices set out.
Understand that you may not necessarily want to buy pieces that are signed or marked. Earlier pieces were created without a mark and are the most valuable.