Sapphire Value, Price, and Jewelry Information ...
Ceylon or Sri Lanka: light to medium tone, slightly grayish to violetish blue. Geuda: milky stones from Sri Lanka that can turn blue as well as yellow or orange when heated. Montana: all colors, usually light to medium tone, grayish saturation. Padparadscha: "lotus flower" color, pinkish orange. Thai or Siamese: dark blue.