Cobalt Net Oval Platter. An elegant serving platter for fish, roast, individually molded salad, sliced fruit, or vegetables, and more. Cobalt Net is the classic Russian decorative pattern and this plate is the genuine article! Fully hand painted and decorated at the Lomonosov Porcelain Factory in St. Petersburg, Russia. Mineral cobalt, 22 Kt gold. 9½" (29.8 cm) in width.