18K Tested Gold Frame With Black Onyx Base. Hallmark at gold frame at front left side. More than 80 pieces each mosaic!! Measure: 3 cm X 2.5 cm or 1 1/4 » X 1′. Weights: 13.8 grams. Cleaning recommended, see photos. We are in business to serve you. For other auctions & many, unusual items. Check our E-Bay Store. Antiques & Collectables PR. The free listing tool.