It is a size 4.75 to a size 5. The shank is oval so it doesn't fit snugly on my mandrel, the opening measures 15mm by 17mm. But we took our caliper to the stones under magnification to give you our best measurements.
We could not get an exact measurement on the depth of the stones without removing them from the setting which should not be done but they seem to be around 2mm deep with the largest center diamond about 2.5mm deep. The diamond length and width measurements are as follows. 5.4 by 4.5mm. 3.8 by 3.5mm. 3.6 by 3.2mm.
And the final 2 end diamonds are about 3mm round. Again without the certified gemologist knowledge of carat weight on old cut stones, this is a loose estimate, but just plugging the measurements into an online calculator for old cut stones, we are getting a total carat weight of over 1.2 carats Estimated!
It has quite the sturdy hand feel despite its small finger size, it weighs 6.9 grams. This ring was made to fit a small finger and was intentionally made more oval so as to lessen the ring size without curving the chunky ring face or loosening the stones.
With this is mind, the ring could be sized up where the back of the shank is extended outward returning the shank to a more round shape and giving it a larger size without bending the face. BUT the hallmarks are on the outside back of the shank (customary for French pieces) so there is a chance those marks could be lost if sized up, unless your jeweler could carefully size it to the size. I just wanted to make a note of that. All my pieces are pre-owned and in estate condition. Some of the diamonds are more cushion cut, like the center stone and others more round.2 stones are chipped, they are the end two on one side, really only the end one is visible to the eye if you try to catch the facet in a reflection and really look for it. The second to end is more of a nick and is not visible to the eye and seen only under magnification. I noticed the center diamond occasionally "clicks" when tapping but not every time so it is barely moving and all the diamonds have nice long prongs in great shape so this one would actually do well with regular wear. One prong is a bit wider and uneven around the center stone so it may have been fortified as it is not quite as tidy as the others. Just being super picky with everything I see under magnification.
They are the typical antique diamonds with irregular sizes, shapes and facets. No dark inclusions and they have a nice bright color, I don't see any warm or gray hues and the largest center stone is especially bright and clear. I can see a few frosty inclusions on some of the smaller stones under magnification only, but unbelievable amount of sparkle on this fun and sturdy piece. But Due to age - please note this is not a mint condition item. Thanks so much for looking at my items!
This item is in the category "Jewelry & Watches\Vintage & Antique Jewelry\Rings". The seller is "callmemouse" and is located in this country: US. This item can be shipped to United States.