That seems to be alright, the trinket still scales to one's level, but all WoD on-use/proc trinket values are much higher than all the other expansions which is what makes them so useful. So I think your tusk is fine.
[doublepost=1603040457,1603039523][/doublepost]Update: I finally added the Resto druid artifact questline item and tried to clarify a few things regarding HoA and Cogwheel gems!
Druids ONLY: My 19 I've been working on is a druid and I am fortunate enough to have 2x 14 ilvl artifacts in my Scythe of Elune, but other druids you are not left out! When doing the Restoration artifact quest, you are given
https://www.wowhead.com/item=135582/corrupted-ghanir-the-mother-tree?bonus=0#created-by-spell mid quest, don't finish the questline - keep this staff! This weapon is awesome.
Note: I did save the resto artifact questline for last so I wouldn't get locked out of the other artifact questlines.