This beautiful black opal cabochon is perfect for adding a touch of elegance to any jewelry piece. With a weight of 2.90 carats and a size of 8x15 mm, this gemstone has an excellent cut grade and an eye-clean clarity grade. The opalescence effect of this natural gemstone adds a unique touch to any design. This black opal is a 100% natural and vintage gemstone from Ethiopia, and has been polished to a cushion shape. It is opaque and has a black gemstone color. This gemstone is perfect for those who want to create a one-of-a-kind jewelry piece with a touch of sophistication.