The bulk update request #11745 is pending approval.
create implication spiked_collar (37482) -> studded_collar (2145)
create implication jewel_collar (85) -> studded_collar (2145)
Reason: Spikes and rhinestones are common types of studs. Plus there's a lot of overlap and it's not always possible to tell if something is a short dull spike or a tall stud.Not sure why rhinestone_collar isn't used? I've seen a good number of them.
EDIT: Found jewel_collar which is both populated and less specific than rhinestone.
Updated