YELLOW GOLD, LAPIS LAZULI, SAPPHIRE AND DIAMOND BROOCH Containing one triangular lapis lazuli plaque measuring approximately 37.00 x 10.90 mm, three round mixed cut sapphires measuring approximately 2.30-3.10 mm in diameter and eight round brilliant cut diamonds weighing approximately 0.25 carat total. Stamp: (maker's mark for James Barker) 18K 22K. 15.35 dwt.