| Watermelon tourmaline is yet another particular coloration of tourmaline. To be considered watermelon tourmaline the stone must have a red/pink interior and a green exterior.
The four slices on the left were create by cutting directly across a tourmaline crystal and then polishing the resultant flats. The cabochon below was cut from a similar slice. Such stones often show a clear area between the red and green colors.
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