by Dragon28 » Jun 2, 2018 What is typically the average price per carat of Pink Tourmaline? There is one I really want for my collection and I want to know if it would be a good price? According to the seller, it is flawless, just about 2.5 carats, round cut with good symmetry. There's also a Deep/Rich-colored Blue Spinel that is almost 3.5 carats, seller says is flawless, and is also round cut with good symmetry. I don't have any blue gemstones in my collection yet and I'd love to get that Blue Spinel as my first stone also so I would also like to know the average price per carat for Blue Spinel.