1 (ONE) Black Tourmaline on Wood Base - A Quality - From Brazil - Healing Stone - Large Tourmaline Natural Stone 1 (ONE) Large Tourmaline Rod Formation Speciment - A Quality - Black Tourmaline with Dark Wooden Stand STOCK PHOTO. Each Tourmaline piece will vary in size and characteristics. Great quality! So beautiful! Beautiful natural stones. Because these are natural, each stone will vary in size, shape and overall appearance. Tourmaline comes from the Singhalese term "turamali", which translates as the stone of mixed colors. Tourmaline is often referred to as the rainbow gemstone. Rock Paradise Exclusive with COA.