126. An 18 carat gold ring with diamonds and green tourmaline

An 18 carat gold ring with diamonds and green tourmaline
The Netherlands, circa 1980
The gold ring set with a central carre-cut facetted green tourmaline, weighing approx. 0.50 carat, flanked by a brilliant-cut diamond, weighing approx 0.10 carat. Marked with maker's mark: Nico Heijkoop. With original case, marked: Nico Heijkoop, Zeist
Gross weight approx. 3.2 grams
Weight tourmaline approx. 0.50 carat / Weight diamond approx. 0.20 carat
Ring size 19 1/2

Estimate
€ 600 - 800
Hammer amount
€ 420