GTC certificated ensure 100% Natural Black Obsidian and you could see in third picture</br>For training pelvic floor musclesfor exercisedecoration display crystal healing or spiritual purpose.</br>The Yoni Egg is smooth and non-porous semi precious gemstones or crystal; that varies in material and size.</br>Manually carved and polished with outstanding finishing from 100% natural and genuine 3 gemstones without any chemical treatment or dyeing.</br>Practicing With a Yoni Egg Helps In:Strengthening your pelvic floor and thus regulating bladder & bowel functions; Alleviate PMS & menopause symptoms through restoring hormonal balance;Stimulating your PC (pubocoggygeal) muscles is a key reventative measure against uterine and rectal prolapse urinary and fecal incontinence bladder pain and menstrual symptom alleviation.</br></br>Product Description</br></br><br><b>Features:</b> <br>1. Manually carved and polished with outstanding finishing from 100% Natural Black Obsidian with the GTC certificated promise without any chemical treatment or dyeing. <br>2. Smooth non-porous semi precious gemstones or crystal.That varies in material and size.Perfect egg for kegel exercise. <br>3. Throughout the ages?? the egg has symbolized new beginnings?? the spark of creation. <br>4. Traditional folk religion regards the egg as a powerful symbol of fertility?? purity and rebirth. <br>5. Magic rituals often use eggs to promote fertility and restore virility (of the body and mind)?? and to foresee the future. <br>6. Eggs mean growth?? protection?? new beginnings?? resurrection. <br>7. The Vernal Equinox celebrates the coming of spring and the egg is an important part of this ancient festival. <br>8. Later customs concerning eggs were associated with Easter. <br>9. Christians emb