This pendant features a beautiful blue Czech glass button. The button has a coating on it known as an "Aurora Borealis" coating. Size is 1 1/2 or 39 MM by 1 1/8 inch or 29 MM. The bail is silver plated with a 7MM opening. It is ready for your chain, collar necklace or ribbon. If you click "Subscribe" on the left side of the screen, you will be notified when I add items to my shop. Thanks for visiting.