René Boivin, Diamond Ruby & Yellow Gold Tremblant Brooch Pin

An antique diamond bouquet brooch en tremblant, circa 1875. Photo Bonhams composed of rose, old mine and modified brilliant-cut diamonds; accompanied by fitted presentation box; estimated total diamond weight: 4.90 carats; mounted in silver-topped fourteen...

An antique diamond en tremblant floral and foliate spray brooch, circa 1880. Photo Bonhams accentuated by a baroque-shaped pearl measuring approximately 14.1 x 10.5mm.;mounted in silver-topped gold; length: 4 5/8in. (pearl untested, some small rose-cut...

Victorian diamond butterfly tremblant brooch Sparkling diamonds aren’t the only eye-catching features of this dazzling Victorian swallowtail butterfly brooch. The 220 Old Mine cut diamonds, weighing approximately 8.00 carats, ruby eyes and glistening...