Very nice oval pendant with a small opal surrounded by rhinestones. I don?t have the equipment to tell if the stones are rhinestones or real diamonds, but they sure sparkle! The opal looks like a white stone until the light hits it, then it shows the pink and blue sparks inside the stone. Measures 1/2 inch long and 3/8 inch wide. No visible markings. Feel free to email with questions. I do combine shipping on multiple items. Have a great day!