29 avril 2016
A superb 20.42 carats rectangular-cut Type IIa diamond ring, by Boucheron
Lot 315. Collection of H.S.H. Gabriela Princess zu Leiningen. A superb 20.42 carats rectangular-cut Type IIa diamond ring, by Boucheron. Estimate CHF2,000,000 – CHF3,000,000 ($2,074,021 - $3,111,032) . Photo Christie's Image Ltd 2016. Set with a rectangular-cut...