A Fellow of the Gemmological Association of Great Britian (Gem A), Juliet Weir-de La Rochefoucauld began her career at Sotheby's & Co., London. Based in France, she writes about jewellery and is working on her next book on the subject. Juliet's great-grandfather, Thomas Weir, founded the jewellers Weir & Sons in Dublin in 1869, a company that is still run by members of the family.