Lang Antiques

Lang Antiques sells antique, vintage and estate jewellery from its boutique at 309 Sutter Street in San Francisco’s Union Square, with engagement rings a clear strength. The online catalogue is sorted by era across Georgian, Victorian, Art Nouveau, Edwardian, Art Deco, Retro and Mid-Century, and each ring is dated and described in detail, so you can read the period and condition before you buy.

The firm also buys estate jewellery and runs the Antique Jewelry University, an open reference on antique and vintage jewellery, gems and jewellery history that is useful background whether or not you buy from them. International orders ship by FedEx International Priority at a flat rate, with a refund window on online purchases, though the limits of shipping and insurance can rule out some destinations, so it is worth confirming delivery to Switzerland before you settle on a piece.