Lapis Concho Belt

I have a lapis concho belt that I am selling and have had a heck of a time finding ALL lapis in a concho belt. Any idea what it may be worth?
This belt is 36" Long, has 9 conchos plus the belt buckle, Marked RKG and stamped Sterling, & hall marked E
Lapis Concho Belt

It can depend on a couple of things. If you can identify the artist that is always a plus and will let you do a search to see how much other pieces by her cost. Also, a close up of one piece with a reference to size, and if you can a weight of one piece, should be able to slid the last piece off.