So here its my actual problem.
when i click on the two squares 1 or 2 it load 2 differents models at POSITION TO WORLD SPACE, RING.x, RING.y, RING.z who correspond to the center of the ring.
the object 1 is perfectly loaded at the right place, due the centered pivot of the ring and diamonds in 3dsmax.
the object 2 when i click is not loaded at the right place.
here it's the result.
do i have to change something in RING.x, RING.y, RING.z for the left diamonds?
And here is my 3dsmax project where you can see the centered pivot point, each 3d object is centered to the ring.