Antique Ring Emerald Diamonds Platinum Gold Made in France c1920 (7444)

Antique ring. Platinum and 18k white gold setting with emerald and diamonds. Made circa 1920 in France.  

Measurements: Weight is 7.8 grams. Ring size US 5.5 (French 51). Approximate dimentions of emerald:  11.67 x 9.81 x 6.19 mm.
(approximately 4.8ct.)

Description : simple white gold shank forks at the shoulders to support the bezel, made in platinum. Rings of openwork platinum grills form the mount. The bottom-most ring is composed of a circle of hearts. Above that, another openwork layer of pairs of scrolls - each mirroring it's partner. The openwork platinum gives strength to the mount and it allows as much light as possible to strike the gems from below, adding to lustre and shine. 
Laid above the platinum mount is a ring of wonderful, gleaming diamonds. They are set at an angle, sloping down towards the finger, giving the ring a ballet-dress or ballooning skirt appearance. In the center, raised in forked platinum prongs is a large rectangular emerald with canted corners. 
A traditional design, with French flair as shown in the quality of the gems and the subtle angles. Quality is indicated in the care and time taken to make the openwork mount, which is not visible when the ring is worn.
This kind of attention to lavish detail is what makes French jewelry superior to anything else.

Marks and Metal: Shank is hallmarked with French dog head and eagle marks for platinum and 18k gold respectively.  The placement and angle of the marks indicates platinum dominant over gold. (dog on left and both facing right).  The maker's mark lozenze contains a cojoined JP on the left corner. The rest of the maker's mark is not clear.     

Condition: Good with minor wear commensurate with age.  Please see enlarged pictures and don't hesitate to ask questions which we will do our best to answer.