Socket, CHD, CHC, and elemental damage are usually the top DPS stats on amulet. Exceptions are when you have very high elemental damage on your gear (which also includes CoE) or if you need something else for a certain breakpoint (e.g., CDR, though that is extremely rare as a viable stat on amulet). In any case, if it turns out that int is better than elemental damage, you can always re-roll it. For now, as I said, you might just leave it untouched and then figure out if the final Jade build in 2.4 will use CoE or not - and depending on that it's either elemental damage or intellect (in addition to socket, CHD, and CHC, which are set). In case you want to keep the int, the other options are getting one percent more crit (very small boost if at all) or 10% more CHD (you'd need to re-roll the amulet approximately a billion times to get there though). In any case, you'd be locked in with those stats.
TL;DR: Keep it for now, untouched, and decide later if you want to re-roll int.
Is the fourth stat a socket? Then you hit the jackpot and the amulet is already brilliant, and you should re-roll the main stat to element. That makes it perfect (and even usable on other classes as well).