RENÉ BOIVIN BAGUE TANZANITE, DIAMANTS DE COULEUR ET DIAMANTS ’DÉCALÉE’
Estimation 20000 $ - 30000 $
Vente le 17/12/2025
Couleur jaune, or, naturel, beige
Dimensions Ø 16.1 mm
Nom de la vente Joaillerie Paris
Lot 180
Maison de vente Christie’s
Pays France
Description du catalogue
Oval-shaped tanzanite, round coloured diamonds and diamonds, French assay mark for 18K yellow gold (750‰), signed René Boivin, French maker’s mark (Société René Boivin), 1977, René Boivin fitted case
Maison René Boivin, 2025: Certificate of Authenticity n°202512YRD, original piece manufactured by René Boivin in November 1977 after a drawing by Marie-Caroline de Brosses
Gem Paris, 2025, report n°202419788470-3: tanzanite, tanzanites are commonly modified by use of thermal process
Tanzanite: for an approximate weight of 3.00-3.40 carats
Coloured diamonds: for an approximate total weight of 1.50-1.70 carat
Diamonds: for an approximate total weight of 0.30-0.50 carat
Size/Dimensions: EU ring size 50¹⁄₂/ US ring size 5¹⁄₄
Gross weight: 12.54 grams
Please note that coloured diamonds have not been tested for natural colour.