Victorian 14K Gold Diana the Huntress Locket with Diamond

This is a wonderful Victorian period 14K gold locket. The top of the locket depicts Diana The Huntress. There is a maker's mark above the feathers which I have not been able to identify. Diana is beautiful with her hair swept up and a tiny old rose-cut diamond adorning her hair. The back has a Victorian scrolling monogram. The picture cover frames are present, but not the covers themselves. The condition is excellent and the locket closes tightly. Dimensions: Just under 1", Weight: 7.3 grams