ƒƒ ATTRIBUTED TO JAHAN IMPORTANT EMERALD JEWELLERY RING It is of dome shape surmounted by a rectangular emerald with cut sides and cut to degrees in claw chaton. Double surround of brilliant-cut and navette-cut diamonds in staggered bezels. Mounted in 18K white gold. Unsigned. Gross weight: 17.13 g. Finger size: 53. Weight of the diamonds: approx. 3.50 to 4 carats. Dimensions of the emerald: approx. 15.50 x 12.28 x 9.64 mm. Emerald weight: approx. 12.50-13.30 carats. Preliminary opinion of GEM Paris: Colombia, moderate oil. Jewellery box from Maison Jahan. An emerald, diamond and 18K white gold ring attributed to Jahan. Unsigned. Gross weight : 17,13 gr. Size : 53. Diamond weight : 3,50 to 4 carats approx. Emerald dimensions : 15,50 x 12,28 x 9,64 mm approx. Emerald weight : 12,50 to 13,30 carats approx. GEM Paris preliminary report, in his opinion : origin Colombia, moderate oil. Jahan box.