If you are a beginner, you are advised to buy the set of three Yoni Eggs which will help you determine the right size that will suit you. You can begin with the use of large size gradually decreasing the size as per your requirements. Our Yoni Eggs come with an attached string, but it can be removed or replaced at any time. If you want to replace the string, unwaxed dental floss is recommended. To Learn More About Yoni Eggs: Click Here Yoni Egg Details: • Gemstone: Carnelian, Unakite, Opalite, Clear Quartz, Xinshan Jade, Black Obsidian, Rose Quartz, Red Jasper, Nephrite Jade, Yellow Tiger Eye, Green Aventurine, Amethyst, Mahogany Obsidian• Set Includes: - 45 * 30 mm (large)- 40 * 25 mm (middle) - 30 * 20 mm (small) - 100% Unique Product of Nature - Color, Markings and Shape May Vary.• Handcrafted Item: Gemstones are handled with love and cut from 100% natural stone, please allow for variances in color, shape, and size as these stones are nature-made and no two are alike. Our yoni eggs are perfectly smooth and are always inspected for any chips and cracks before shipping. No chemicals are used during the manufacturing process. No fillers or dyes – the only material of the wand and egg is the crystal you ordered and natural beeswax. We only stock quality gems.