As discussed last week, typically rhinestones falling off costumes is a bad thing. However, there are times when you might want to remove rhinestones from a costume or accessory. For example, perhaps you stoned your shoes and the shoes have worn out. Perhaps a a bracelet broke and is no longer wearable, or a stoned hair piece ripped. The object is no longer usable, but the stones might still be.
Now pour in your glue remover of choice. Acetone and acetone substitutes work great. For this removal, I used a half-full bottle of nail polish remover. I've heard that Goo-gone works as well, and that it can be applied locally so as to not damage the rest of the costume. I can't vouch for that, as I've only done this on fabrics I knew I wasn't going to use again. Pour on enough that the fabric is fairly well submerged, though complete submersion didn't seem to be necessary. The fumes alone are fairly powerful. This is why I cover the container and put it out of the way for a day or two.