Wholesale Raw Rainbow Tourmaline Crystals Uniqueness Guaranteed: Every item is one-of-a-kind, making them ideal for all projects or designs. Avg Size Range: (4 to 15 Millimeters) Sizes Vary Rainbow tourmaline, sometimes also called watermelon or Elbaite tourmaline, is a mix of tourmaline crystals that contain different kinds of inclusions. Inclusions of lithium, titanium, iron, or magnesium can result in red, green, blue, or yellow crystals, respectively. Watermelon tourmaline refers to green tourmaline wrapped around a red core, and can fetch a high price depending on the clarity. Custom Requests: Have specific preferences? Leave a message with your order, and we'll do our best to accommodate your requests if possible. Handmade items vary in size, shape, and color when selected randomly (the highest quality items are chosen first). They'll be as beautiful as those in the photos.