Vintage 1960's Sherman Brooch

Vintage 1960s domed brooch, signed by Gustave Sherman a renowned Montreal designer. The crystals are smoky topaz with aurora borealis hues of blue, green and purple. The crystals are prong set in rhodium plated metal. All crystals are original. The brooch is 4.5 cm (1.75 inches) in diameter. In beautiful vintage condition, slight scuffing of center crystal (see photos).