I would appreciate your help in finding a good bonding substance to repair a valuable crystal wine glass I broke accidentally a piece off. Thank you in advance. Greetings, Elisa

Use Super Glue. It is colorless, and makes a fine glue line. It even holds up in the dish washer.

Thank you very much, labman, for your speedy reply. I will try to repair the glass with super glue. Guess, I just needed the encouragement to use it. Greetings, Elisa

I once used superglue, and it left a horrible surrounding white mark. After I glued to pieces of glass together, a surrounding white mark was there. I would suggest that you first TEST your super glue on something, if it leaves a white surround mark (after a few minutes) then use another one.