Portrait Ring, Georgian

This is a lovely portrait ring (watercolor) circa 1760. The ring is set in 18 ct gold, and is in very good condition; there are some surface scratches on the bezel, consistent with the age of this piece, and there are a few black dots of dirt or paint on the ladies' face, but nothing that really mars the grace of this wonderful period piece. The back of the ring is quite different and I don't know what it is. It looks like a few pieces of hair, so it may have been human hair that has dissolved or been removed. The shape of the ring is a little different, as the shank has been made to fit the portrait, but it appears to be all original . The miniature, measures 3/4 of an inch North to South, and 1/2 inch East to West. The ring is a size 61/4 to 6 and 1/2. It is hard to size on the size because of it's shape, but that's the way it fits my finger. This ring was very difficult to photograph. The glass is curved and causes a glare; it was hard to get the black dots, without making them seem worse than they are . At any rate, forgive the glare from the sun on the glass.