Royal Cobalt Blue Flower Floral Earrings Sterling Silver J528

Royal Cobalt Blue Flower Floral Earrings Sterling Silver J528 I am unsure what these are made of. When looking with a loupe, I am not seeing any air bubbles in them, which I would expect to see if they are glass so they might be carved stone. I just don't know...glass or stone?? They are marked 925 and another mark I can't clearly read but appears to read JOD or JED. They are very pretty and feel like good quality. Please look at the pictures for details and condition. The item pictured is the exact item you will receive. Vintage jewelry will show some signs of age, which is expected from many years of wear. If I see anything out of normal wear, I will always note it. J528