Watermelon tourmaline is a type of tourmaline gemstone characterized by a striking, natural color zoning that resembles a watermelon's cross-section, with a pink or red center surrounded by a green exterior.
This unique color zoning is a natural phenomenon that occurs during the crystal formation process, as variations in the mineral composition (specifically iron, lithium, manganese, and other elements) lead to the different colors.
This 13mm stone is set into an adjustable sterling silver ring.
