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Lot n° 146 Bague saphirs et diamants Bague en or gris 18k (750 millièmes) sertie d'un saphir taillé en triangle de 4,01 carats, la monture soulignée de diamants taille baguette et brillant. Poids brut : 11,1 g. Doigt 50.5 Rapport d'analyse du GRS de 2006 précisant l'absence de traitement et de Bellerophon de février 2025 confirmant l'absence de traitement thermique et la nature basaltique de la pierre. Ring set with triangle-shaped sapphire of 4,01 carats and brilliant-cut diamonds, white gold. Gross weight : 11.1 g. Ring size : 50.5 GRS, 2006, absence of treatment. Bellerophon, 2025, no indication of heating and basaltic related deposit.