These are 16mm/7mm doll eyes made with synthetic ruby. For the whites of the eyes and the coating, I've used Padico's Resin Shine Drop, Gem Drop White, and Shine Drop Gloss to prevent yellowing. There may be some fine air bubbles, and the edges and backs may not be perfectly finished. Also, due to the nature of resin, they 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 keep in mind that these are handmade items, and we kindly ask that those seeking perfection refrain from purchasing. Volks Super Dollfie Oreshi (Mineral Eyes) Mineral Eyes Gem Eyes Resin Eyes SDM Yousd (Yo-SD) SD DOLK Doll MSD