Diamond, synthetic ruby & sapphire brooch Designed as a sailboat pavé-set with circular and single-cut diamonds, calibré-cut synthetic ruby and sapphire, back engraved ERA GIA L’ORA CHE VOLGE IL DISIO AI NAVIGANTI 4 X 32 – 4 X 72 Tested for 18K gold, not conclusive. Probably platinum, not stamped Dimensions approximately : 3 x 3,8 cm Gross weight approximately : 8,55 grams