René Boivin, Magnificent Art Deco Sapphire and Diamond Brooch 'Starfish'

1938
Set with a cushion-shaped sapphire, surrounded by old-, circular- and single-cut diamond-set rays accented by circular-cut sapphires and blue enamel, mounted in platinum and 18K white gold, fold-down double pin stems each with sweater hook, length approximately 11/16 inches, with French assay mark and maker's mark.

Accompanied by a Certificate of Authenticity from René Boivin and a Letter of Expertise from Jean-Norbert Salit.
Accompanied by AGL report no. 1130767 stating that the main sapphire is of Ceylon origin with no gemological evidence of heat or clarity enhancement.
Also accompanied by SSEF report no. 127799, stating that the main sapphire is of Ceylon origin, with no indication of heating; together with an additional gemological report.

1938

Set with a cushion-shaped sapphire, surrounded by old-, circular- and single-cut diamond-set rays accented by circular-cut sapphires and blue enamel, mounted in platinum and 18K white gold, fold-down double pin stems each with sweater hook, length approximately 11/16 inches, with French assay mark and maker's mark.

Accompanied by a Certificate of Authenticity from René Boivin and a Letter of Expertise from Jean-Norbert Salit.
Accompanied by AGL report no. 1130767 stating that the main sapphire is of Ceylon origin with no gemological evidence of heat or clarity enhancement.
Also accompanied by SSEF report no. 127799, stating that the main sapphire is of Ceylon origin, with no indication of heating; together with an additional gemological report.