Beautiful Antique Art Deco Cross 54 Diamonds and 20 Sapphires Platinum 18K Gold Pendant Cross. The cross measures 2-1/4 inches high to the top loop and measures 1-1/4 inches wide from side to side. The diamond weight is 1.48 carats. The cross has platinum set diamonds and sapphires at the top. The underside is 18K yellow gold. Weight 5.2 grams.