anifanatical@leilaniphoenix You can usually buy jump rings and chains at your local craft store. If you are looking to buy just a few jump rings, you might check out this website:
The holes on my pendants should fit most size jump rings, but I usually use 6mm diameter ones.
anifanatical@TLP1666 Tamara, thank you so much for the feedback! I'm glad you like the piece! Kaiidth is my personal favorite pendant and I wear it very often on a small jump ring without any problems, but I will certainly keep an eye on the hole size in future pieces. Thank you!