73 mm Natural Druzy Chalcedony in Quartz Crystal Sphere weighs 468 grams— Mineral Healing crystal sourced from Spain — Brand new and absolutely gorgeous. Silver footed stand included. Thanks for checking out our listing. Sphalerite has become the popular trade name for this material, but it’s not really what it is. Transparency is most important to us. We will answer any question to the best of our ability. We have many polished and high end quality crystal specimens that would make your collection stellar. We are happy to combine shipping and we ship immediately upon receiving payment.