This is an Ethiopian black opal. Please check the photos, which were taken in natural light from a window. The size is approximately 10 x 8 x 4.7mm, and it weighs 1.65ct. It is new and unused, with no noticeable scratches or abrasions, but as a natural stone, there may be fine scratches or cracks. Please check the photos. If you are satisfied, please proceed with your purchase.