So I presented the sapphire option to my girlfriend. She was hesitant at first because she wasn't sure what it would look like on her hand. After scouring Toronto, I found the Fair Trade Jewellery Co. (
http://ftjco.com/). I'm linking to them because they are fantastic.
They stayed open past their normal hours so that my girlfriend and I could make it down. They sourced 3 purple sapphires for us so she could see, and 1 of which was absolutely gorgeous. My girlfriend loved it, and it's what I ended up going with. Putting a payment down next week.
But the best part appeals to the nerd and engineer in me. They do bespoke rings, fully in-house. They will customize the ring to any design you want, to fit your finger and the gem. That way, it's not only designed the way you want, it's made to uniquely fit you.
They design everything in CAD, and iterate with you via e-mail. Then they print it on their 3D printer, where you have a chance to go in, see it in person on your finger and with the gem. If changes are needed, they can iterate again. Otherwise, they go ahead and make a plaster mold. Then they melt the metal (i.e. gold, platinum) and cast it. They have all the equipment for this in-house in the back of their store. Honestly, I haven't been more excited about buying a ring than now. I'm super happy I found them.