Would you wear this intriguing indicolite cat's eye tourmaline as a gemstone 3 stone engagement ring or cocktail ring? The vibrant blue-green of this chatoyant gem with a mesmerizing, winking "eye" is actually caused by microscoping rutile needles within the tourmaline. A bespoke 18k white gold design created in our Santa Barbara, California studio, you'll love the feel and look of this contemporary treasure.