New Wave. Tourmalines have a unique depth of color in the world of gems, epitomized by this Seafoam Tourmaline. The tone is turquoise-infused green, warm and sparkling. The size, at nearly 24 carats, is simply astonishing. This mermaid's treasure is worthy of any collection, and would make an extraordinary piece of High Jewelry. Call us for a design chat today! Gemstone Details