Amazing Volcano Agate Skull *UV Reactive* | High Quality | UV Reactive | Blacklight | Goth | Home Decor | Quartz | Specifications: 2.8” x 2.1” A must have for your UV collection! You will receive the exact item listed. Gemstones and crystals are natural products of Earth. Stones and crystals may have slight blemishes and imperfections. Please review the measurements and view all the photos before making a purchase.