"Ribbon knot" ring in 18k yellow gold (750‰) adorned with emeralds and round-cut diamonds,

"Ribbon knot" ring in 18k yellow gold (750‰)
adorned with emeralds and round-cut diamonds,
star-set, and diamond paving in the center,
calibrated rubies on each end
1945-50s
Ring size: 54
Gross weight: 22,3 g