I'd look on. Amazon
Hi Susan. I'm Cindy. I make jewelry and I use many different kinds of beads. JoAnne's and Hobby Lobby have many to choose from, including rectangular beads. You can purchase Chakra beads from Fire Mountain Beads, Bed Bath and Beyond, and Michaels. And, of course, on Amazon. Good luck Susan.
Susan: maybe this will help
Have you checked on eBay?
When searching, set your filter on International results.
here are some loose https://www.amazon.com/Mutilcolor-Rectangle-Cabochon-Gemstone-Wholesale/dp/B01F3HSMB8 I buy stones from these 2 sites https://www.gomggsale.com/c/cabochon-beads-0625?&Narrow=1327 another https://www.dakotastones.com/Cabochons-_c_986.html make sure the stones are 100% real many are not they are resin,glass,compressed many many fakes; for true Chakra they need to be real raw stones
You could try Etsy, eBay, even Amazon, Hobby Lobby, Michaels, Jo Ann Fabric.