Black Onyx Stone Egg Being an absolute beauty, these handcrafted stone eggs would make an amazing decorative collection or centerpiece around home. The black marble texture blending with the rich charcoal colors makes it a treasured gift or a unique collectible for anyone. These onyx and marble eggs are obtained by exploding the mountains for stones, which are cut into smaller pieces to be crafted. Each stone is taken and sculptured by hand to be transformed into a unique and stylish egg. Rubbing and polishing them at the end adds the perfect finishing touch to bring shininess and smoothness.