Quartz overgrowth by excellent octahedral mirror sphalerite-marmatite crystals– Size: 70 x 66 x30 mm Weight:137 grams – A specimen that you receive may look slightly different in color from the one on the photographs. Because of the lights used to make the photos. – Thank you for visiting our shop! If you didn’t find what you’re looking for or you have any questions. Please don’t hesitate to contact me. I’d be glad to help you.