Vintage 10k Gemstone Bracelet

This is a vintage 10K yellow gold tennis bracelet that I received from my late aunt in the '90s. I believe she owned it for many years before I acquired it. The jeweler that tested the gold for me said that the bracelet is definitely old & before the 90s. He said it may be from the 70s. He also believes the clear stones in the bracelet are sapphires. The strange thing is there are 2 stones that are different in color. One is pink/purple & other is light blueish. He said it looks like an amethyst & an aquamarine. I honestly don't know why those two stones are different but I will say that I think they were added or switched out at some point. I don't & will never know the reason for the 2 different stones but it, in my opinion, adds a unique touch to the bracelet. The bracelet is 7 ¼" in length, and it has a perfectly working clasp that's marked 417 with the letters ODI. The pics give the best description of the bracelet, and it weighs 7.9 g. Feel free to ask questions. Thanks