16mm/5mm doll eyes using tourmaline in the iris. For the sclera and coating, I've used Padico's Resin Shine Drop, Gem Drop White, and Shine Drop Gloss to prevent yellowing. There may be fine air bubbles, and the edges and backs may not be perfectly finished. Also, due to the nature of resin, it may break if excessive force is applied. Natural stones may have slight color variations, inclusions, and cracks, but please understand that these are part of the charm of natural stones. Due to digital images, the colors may differ from the actual product. Please also note that these are handmade items, and we kindly ask that those seeking perfection refrain from purchasing. Volks Super Dollfie Mineral Eyes Gem Eyes Resin Eyes SDM YousD SD DOLK Doll MSD