Bow brooch of gold with deep green synthetic spinel in a box with lid

Rectangular symmetrical bow brooch of gold with deep green synthetic spinel. The upper part of the bow is matte gold, the edges are polished. On the reverse, the bow is fitted with a cannon clasp slightly above the center, allowing it to be worn well centered and high against the neckline. The stone is emerald-cut. Box with lid of dark reddish-brown cardboard with gold edges. Lining of velvet in silk. Inside the lid: Esmann Jewelers Utrecht.