Black Opal Large Polished Pieces #1 measures approximately 1 7/8" to 2 1/16" (46mm to 51mm) and weighs approximately 2.6 to 3.9 ounces (65.7 to 98.7 grams). The Black Opal which is really more of a beautiful deep brown is surrounded by beautiful beiges and lighter browns. Please let me pick one for you. These are $7.00 USD each.
(Healing Crystal)
Hardness: 5.5 - 6.5
Origin: Madagascar