Sri Lankan Sapphire
Sri Lanka β historically Ceylon β is one of the longest-running sapphire sources. Stones run from pale cornflower to rich blue, plus pink, yellow and padparadscha colours.
Heat treatment is common and accepted when disclosed. Unheated stones with strong colour command a different conversation. A tokenization record should copy the treatment line from the report, not a marketing adjective.
See tokenized sapphire assets, Kashmir sapphire and padparadscha.