So hard to find these ouroboros charm holders!
I'm not going to call this a split ring because actually this ring has an unusual hinged opening, which is nearly impossible to spot, because the hinge and the fastening is so well made as to be invisible!
weighs - 3.9g
High carat gold 15 - 18
Circa 1800
Size 9 if you want to wear it as a ring, and 25mm wide diameter
Excellent. condition