Black Obsidian Yoni Eggs Each Yoni Egg purchase comes in a sanitary, sealed, professional package complete with a user guide, four pocket crystals and a custom silk keepsake pouch. Our Yoni Eggs are hand-carved and gently tumbled to a smooth and silky texture , perfect for your sacred inner space. We are proud to offer women the first holistic, non-porous, hygienic alternative to stainless steel ben wa balls and plastic pelvic floor exercisers. Gemstone Yoni Eggs are not enhanced or shaped with chemicals, dyes, heat, plasticizers like phthalates, BPA, etc. making them totally safe and totally natural. Shiny, silky smooth, may have ever so tiny surface nicks, medium weight