This listing is for ONE (1) Orthoceras Egg-Shaped Polished Stone - Makes a Great Easter Gift Idea! STOCK PHOTO. Each egg may vary slightly in size and characteristics. Measurements range from approx: 55x43mm - 68x50mm Perfect for home or office display, crafts, keeping in your meditation space, or even gifting! Orthoceras is known to be the fossilized remains of an extinct marine animal that is around 400 million years old. Orthoceras is said to reduce stress and anxiety. It is also said to give confidence in the stone holder and help depressed people out and makes them emotionally stable. Information provided is folklore and not intended as medical advice or a promise of any outcome. Our crystals should be used as a complement to other therapies and not as a replacement for medical treatment.For medical advice, please consult a licensed healthcare specialist. We have your best interest at heart. We hope that each user has a positive experience with our products.