Tourmalines are formed in areas where volcanoes have produced magma. This magma is cooled, with large empty cracks. The cracks will then be naturally filled with water and minerals such as iron, lithium or magnesium. Over time, these will then turn into crystals of tourmaline.
The term tourmaline was derived from the Singhalese phrase tura mali, meaning "stone mixed with vibrant colors", and the watermelon prefix refers to the unique color combination that resembles the fruit of the same name.
"As the crystal grows, it uses the elements that fit most easily within the lattice. As these elements in the solution are depleted, other elements are substituted and the color of the crystal changes." Brazil is famous for its gem-quality watermelon tourmalines, with amazingly clear and vibrant colors.
Watermelon tourmaline crystals tend to form with a distinctive rounded triangular shape, as demonstrated beautifully in this stunning pendant.
Dimensions: 2" x 2.3" x .22" inches
Weight Grams: 160 carats
Watermelon Tourmaline Keys: Calm & Joy
Keys. Heart (4th)
Cutting the stone into slices like a loaf of bread rather than faceting the rough often enhances the resemblance to a real watermelon. Their complex structure makes tourmalines very difficult to cut. A great deal of expertise is required to identify areas of tension within the stone, which can cause it to crack during the cutting process.