C. 2010. Here's a bold and beautiful look from Italian designer Castellani, now part of our Estate collection. On this pendant necklace, an … C. 2010. Here's a bold and beautiful look from Italian designer Castellani, now part of our Estate collection. On this pendant necklace, an oval is crafted of polished sterling silver with black rhodium, offset by warm 18kt yellow gold floral and roped details for an impactful contrast. Suspends from a cable chain. Springring clasp, Castellani sterling silver and 18kt yellow gold pendant necklace. Exclusive, one-of-a-kind Estate Jewelry.