A lapis and diamond brooch White metal

Of round shape and openwork design, inlaid with a lapis lazuli slice between rose-cut diamond borders, set in white metal, to millegrain detailing, unmarked, length 3.3cm, in a fitted box by Tessiers, 26 Bond street.

The item has been XRF tested and found to be 26% gold, 25% platinum, 2% silver.