I made this GORGEOUSSSSSS Aurora Opal pendant with 925 sterling silver. Aurora Opal is not natural from the ground but is high quality, lab made Opal. This one is topped with glass so it will not get scratched. It’s absolutely amazing! The colors shift at every single angle beautifully. I patterned the background with spider webs and put spiders around the bezel. I soldered the patterned jump ring closed. Measurements are in the photos. I mean this is so colorful and vibrant! It’s hard capturing something so pretty on camera! My name, Jonna, and STERLING are marked on the back. Any questions, just ask! PRETTIER IN PERSON