Antique marquis sapphire Byzantine ring. The ring is set with five genuine vivid blue marquis sapphires. The stones are all bezel set and lay flat to the ring. The stones are in excellent condition. While most marquis sapphires have a tendancy to go black in color, these are vivid clear blue. The ring measures 1 1/4" long by 3/4" wide and is a size 7. This is a heavy piece weighing 5.6 dwts. The ring dates to the turn of the century and is hallmarked with continental marks and 750 for 18k on the interior of the shank.