Jewellery Designer | Lab-Grown Diamonds | Nyon, SwitzerlandStephanie Van Zwam is a jewellery designer based in Nyon, Switzerland. Every piece is made to order in 18k recycled gold with lab-grown diamonds, individually certified by the GIA or IGI. The collections include engagement rings, wedding bands, necklaces, and earrings. Bespoke commissions are welcome. Consultations are complimentary, in person or online.