Forget baguette, round, square or emerald cut ... This 2.135ct natural Green Montana Sapphire ring boasts an incredibly clean stone with a light hint of a yellow sun spot in the middle and ...

Easily the most recognizable engagement ring in the royal family and the world, Princess Diana’s blue Ceylon faceted sapphire ring comes in at a whopping 12 carats. The sapphire, encircled by 14 ...