WEINGRILL EMERALD AND DIAMOND TUBOGAS NECKLACE IN 18KT YELLOW GOLD WEINGRILL TUBOGAS NECKLACE WITH EMERALDS AND DIAMONDS 18kt yellow gold, made with a double band, embellished with teardrop and baguette-cut emeralds (one missing) approx. 4.50 ct and brilliant-cut diamonds approx. 1.70 ct, signed 'Weingrill', manufacturer's and logo hallmarks 750, length 38 cm, gr. 142