Whelp, this is the main reason I bought an equinox.. they say it can find gold chains, only my second hunt and BAM! Best find to date. Also managed to pick up a small gold earring and silver ring.
This makes 4 golds in 2 hunts, over 80 grams of gold already.
I ended up getting really lucky with the gold chain. When I ran the nox over it it sounded like a lot of little pieces of foil or something along with a louder hit from the pendant. After 2 attempts of trying to dig it up with my stealth 720i scoop I was about to move on assuming it was tiny pieces of trash or foil. Luckily on my last attempt I got the pendant in the scoop.
I think if the pendant wasn't on the necklace I may have moved past this target... knowing from my excal days whenever there's a bunch of little blips 90% of the time its bits of foil, however, moving forward now that I know what a gold necklace sounds like I'll be a lot more patient trying to dig targets like this.
Gonna see if I can go 3 for 3 tomorrow
, happy hunting.
That is a GANGSTA find for sure! 
You can by a 2nd Nox now and double your gold finds. 
