This slender pear cut  Psilomelan (Black Malachite)  stone is so beautiful with its concentric graphite colored pattern on jet black. Set in a solid sterling silver ring, this rate stone makes an elegant lengthening look. 
 
Metal: Solid sterling silver
Stone: Crown Of Silver Psilomelan (Black Malachite)
Size: 7 1/2
Country of Origin: Chihuahua, Mexico