Mine 6 uncut gems from small rock-like nodes around the southern edge of U.J.L. 1.0 ( 1093, 395, 1050 ) /waypoint 1093, 395, 1050. The spawn locations are random. See the talk page for some of the locations where other players have found them. Or just look around the bases of the large rocks in tha area for small round grey lumps.
Note: See the talk page for Random Spawn Locations