SAPPHIRE AND DIAMOND RING The oval sapphire weighs 2.29 carats...
SAPPHIRE AND DIAMOND RING
The oval sapphire weighs 2.29 carats and is set in a border of baguette-cut diamonds; French hallmarks for 18-karat gold (750 ‰) and platinum (850 ‰); SB master’s mark for Serge Bouder; ring size 49, gross weight 6.26 g.
Accompanied by an analysis report from Bellerophon certifying that there is no indication of treatment for this sapphire. Report No. A16006 dated April 21, 2026.
SAPPHIRE AND DIAMOND RING
The oval sapphire weighing 2.29 carats is set within a baguette-cut diamond surround, with French hallmarks for 18-karat gold and platinum, the maker’s mark “SB” for Serge Bouder, ring size J, and a gross weight of 6.26 grams.
Accompanied by a report from Bellerophon stating that there is no indication of treatment for this sapphire. Report No. A16006 dated April 21, 2026.
For further information on this lot, please visit Bonhams.com
Estimate
Time, Location
Auction House
SAPPHIRE AND DIAMOND RING
The oval sapphire weighs 2.29 carats and is set in a border of baguette-cut diamonds; French hallmarks for 18-karat gold (750 ‰) and platinum (850 ‰); SB master’s mark for Serge Bouder; ring size 49, gross weight 6.26 g.
Accompanied by an analysis report from Bellerophon certifying that there is no indication of treatment for this sapphire. Report No. A16006 dated April 21, 2026.
SAPPHIRE AND DIAMOND RING
The oval sapphire weighing 2.29 carats is set within a baguette-cut diamond surround, with French hallmarks for 18-karat gold and platinum, the maker’s mark “SB” for Serge Bouder, ring size J, and a gross weight of 6.26 grams.
Accompanied by a report from Bellerophon stating that there is no indication of treatment for this sapphire. Report No. A16006 dated April 21, 2026.
For further information on this lot, please visit Bonhams.com
Estimate
Time, Location
Auction House
