Hi Everyone - I have an antique platinum mounting that would look great with a blue cushion or oval cut sapphire. I have found diamonds are much easier to get a handle on - especially when considering an online purchase. Ideally, I would like to find an unheated Burma or Ceylon sapphire, but if that isn't possible, or only available at an incredible price, I would certainly consider heated. Have any of you purchased blue sapphires online, and if so, do you have any recommendations. I see so many websites that have what appear to be rather skeptical lab reports and then others that say triple A sapphires only (again, skeptical of that as I know sapphires are not graded by A, AA, or AAA). Thanks for any advice.