Although not the most common, the result of an accident, the crystals can crack and make it necessary to change or repair. But there are times when its replacement may not compensate, for example if it is a large glass that has cracked and is in a place not very visible. Then you can opt for a cheaper solution, paste it.
The process of bonding glass is very delicate because the gluing will always be noticed due to the transparency of the glass. However, the glass can be glued with a cyanoacrylate glue or with epoxy glue; it is good to know that the most effective glues are those that harden when receiving ultraviolet rays from the sun.
The first thing to do is to clean the pieces that have to be stuck with trichloroethylene and then spread a thin layer of glue over the edges that have to be attached. You will have to join the different pieces of glass and hold them with adhesive paper or heat to prevent them from moving while they are sticking. Finally, let the glass dry in the sunlight so that the glue hardens when it is received.