Quick-drying adhesive can be used for bonding. The strength is high, but the water resistance is not good. Colorless and transparent epoxy structural adhesive can also be used, which has high weather resistance.
Glue for bonding. No, 520 may fall off once it comes into contact with water or for a long time. If your gems are diamonds, sapphires, rubies and other top quality gems, I suggest you send them to a jewelry store for professional treatment.
Using adhesive, the first answer will get 2 points, and the accepted answer will get bonus points and an extra 20 points.
Please don't glue easily, you need to find a professional diamond ring repairman to deal with it.
It's easy now. Clean up the silver part and see if the torus can be pressed back. The inlay part should not be too tight, as long as it can't be pressed in. The tightness should be appropriate. Take off the ring face, clean the part to be combined, and there should be no foreign objects, silver embroidery or oil on the silver ornaments.