"Our Stardust Band, featuring Black Onyx, is a grounding stone known to support willpower. Whether you're struggling to stay focused at work or you want to improve your awareness of your surroundings, this gem is perfect for you. With the power to enhance self-control, you'll be able to focus on shooting for the stars. Details - Authentic Moon Magic Black Onyx- Authentic White Zircon- Stone Size: Black Onyx 2mm & White Zircon 1.50mm- Cut: Round-shaped brilliant cut- Stone Weight: 0.31 ct- Metal Weight: 2.40 g- Gem authenticity approved by GIA"