A long scary name that is hard to pronounce, cyanoacrylate glue. A more familiar name for this glue is also super glue, but not all super glues are cyanoacrylate glues.
We use the CA (abbreviation) glue of the brand Starbond. The glue of this manufacturer is non-toxic, non-flammable and water-resistant.
That makes it ideal for making jewelry (and many other applications).
We use this glue, among other things, for the processing of gemstones in our rings.