Lot 128. A diamond brooch, possibly Laykin et Cie. Estimate US$ 20,000 - 30,000 €19,000 - 28,000). Photo: Bonhams.

of cascade motif, set with marquise, pear and round brilliant-cut diamonds; unsigned, no.13405; accompanied by a signed box; estimated total diamond weight: 26.70 carats; mounted in platinum; length: 2 1/2in.

Bonhams. FINE JEWELLERY, 24 Apr 2017, 15:00 EDT, NEW YORK