Ring Bridge in low titer gold, silver, black enamel, diamond and malachite

MATERIAL: low-titled gold, silver, black enamel, green stone and diamonds DESCRIPTION: bridge ring with high rectangular base in wrought gold and black enamel on which rests a part in malachite embellished with old-cut pavé diamonds, bearing the 375 mark 925 MEASURES: ring 15 WEIGHT: 17.7 gr