This MOSAIC FIRE OPAL AND STERLING SILVER LINK BOX BRACELET HAS A MAKER'S MARK WHICH I CANNOT FIGURE OUT. I believe it is Native American but I am not 100% sure. The jeweler said it was Mosaic Fire Opal. The color is gorgeous and it is sterling silver as I tested it to be. This is 7 1/2" in length. I do not polish vintage jewelry as I let the buyer do that if they desire. If you want more pics just let me know. This weighs 14.88 grams on my scale.