Valuable 18 kt gold band ring and diamonds

Origin: European
Confection: impeccable antique jewelry work
Circa: 1920
Metal: 18 kt gold
Gems: 5 full cut brilliants of 0.15 ct each of excellent color E and purity IF

Total weight: 2.7 grams
Measurements: ring number 15
inner diameter 1.6cm
Remarks: headband design piece
Perfect state