The 29ct cushion-shaped Kashmir sapphire set into Cartier's Bleu-Bleuet ring, from the Royal collection, is flanked by two triangular-shaped diamonds at just over 2ct each.
The 29ct cushion-shaped Kashmir sapphire set into Cartier's Bleu-Bleuet ring, from the Royal collection, is flanked by two triangular-shaped diamonds at just over 2ct each.
The 29ct cushion-shaped Kashmir sapphire set into Cartier's Bleu-Bleuet ring, from the Royal collection, is flanked by two triangular-shaped diamonds at just over 2ct each.
