I'm trying to understand your question so I can answer correctly....you want to solder a Swarovski crystal into a metal setting? Or do you want to solder a setting to something else that has a Swarovski crystal in it?
if it's the first you can't solder a crystal to a setting. if it's the second you also can't... you can probably weld it together using a laser welder. A solder torch will damage the crystal. I hope this answers your question. If you need more info please let me know



soldering
How do you solder swarovski crystals that are in settings?
Colleen