RENÉ BOIVIN Diamond and Amethyst Brooch, ca. 2005 Of umbel flower design, decorated with circular-cut amethysts in various shades of violet, enhanced with a circular-cut diamond accent, mounted in oxidized 18K gold, diameter 7.5 cm. Signed 'René Boivin,' numbered 1/1 and dated. With French assay marks
TIFFANY & CO | DIAMOND AND TSAVORITE GARNET BROOCH Designed as two circular-cut diamond Queen Anne's Lace flower blossoms brooch | tsavorite garnet leaves, with diamond blooms and stems, set in gold and platinum. Signed.