Marquise ring in yellow gold, sapphires and diamonds, late 19th century

Marquise ring in 18K yellow gold and platinum, set at its center with sapphires forming a star, within a surround of rose-cut diamonds.
French work from the late 19th century.
Hallmark: eagle’s head
Gross weight: 4.36 g
Motif height: 2.50 cm
Motif width: 0.80 cm
Ring size: 50