Thanks for the encouragement everyone! There is a similar bracelet with rubies and I could also custom order one with green emeralds. Of the 3 stones, which do you think will look best - sapphires, emeralds or rubies?
I think it's the kind of classic, sleek art deco design that would work with any of those stones. If you don't have a favorite amongst those 3, maybe go with what stone or color would work best with your usual wardrobe? If you prefer warm colors in your wardrobe, emerald or rubies would be lovely and if you have more cool colors, sapphires would complement that nicely.
(I asked about unheated and untreated stones because I just personally prefer those.)