Tourmaline – Natural, Faceted, Brown, 7.07 ct
Yellow, Mn-rich tourmalines from all over the world, like this 7.07-ct. oval-cut gem from Madagascar, have been called tsilaisites. However, they don't have the necessary chemical composition to qualify as examples of this distinct species. © The Gem Trader. Used with permission.
Credit: The Gem Trader
|Natural or man made