If you’re looking for pre-made silver jump rings, then you can try
either Metalliferous (www.metalliferous.com) or Rio Grande. Many of
the other metals suppliers also have jump rings.
However, if you’re doing a LOT of them and want the most flexibility
in gauge, size, and metal, you should learn to make your own either
manually or using a system like a Jump_Ringer. It will be worth the
investment, as it will be a lot cheaper over time to make your own
than to buy pre-made.
Hand-crafted artisan jewelry