Antique Victorian emerald and diamond ring 18 carat gold and silver

Era: Victorian circa 1840
Metal: 18 carat gold, silver set
Gemstones: Old cut emeralds two 2.2x2.2mm, Old cut diamonds x nine. Centre stone 3mm, six x 1.5mm, two x 1mm
Weight: 3.3grams
Dimensions: Head 13.6 x 11.4mm
Size: UK N.5 US 6.75
 
A stunning late Georgian era component of old cut diamonds and emeralds, sit in a rectangular cluster to make the head of this unique ring, Two further old cut diamonds are set to the shoulders. 
 
The head is open back and the gemstones are silver set with a cut down collet edge. The gemstones are all original to the piece and it has clearly been chosen and assembled by hand. This came to us as a brooch, but with the curved back, I think it likely started life as a ring or possible button/dress embellishment, so I decided to convert it back to it's true form, which suits it so well!