These aren't that great, they aren't terrible, but I definitely wouldnt recommend them to someone putting Swarovski crystals on small surfaces.
I've used this before and they really work. I'm hoping with the
superglue gel I'll be able to do a more professional looking
I was really hoping these would work and they do but they do definitly leave a waxy residue on the gems. And to get the residue off you have to lightly wet a cloth and softly wipe it off. Which is something I don't really want to have to do since I use a lot of gems on one item sometimes.
I found it easier to cut off the end of a cotton swab, wet the stick and than use that to place the gems.
These were great for applying the teeny-tiny flatbacks I used in my last project. They definitely do leave a residue on the surface of the crystal, but I had no trouble removing that by buffing gently with a piece of facial tissue - after the glue had dried of course!