This is a small geode that is polished on the outer rim. The backside of the geode is in its natural material unpolished (on face is polished). It measures 1.7" x . 1.1" x .6" it weighs .849 oz.
It's opening measures .6" x .1" . It has a narrow opening but there is a beautiful growth in the center of that pocket. NOTE: The picture shows a yellow crystal in middle growth area however that is believed to be a photo flaw in person we are not seeing yellow.