I was playing DF with Suika fortress mod(not sure if it matters), and i'm pretty amazed by what's happened. In the middle of summer, before I could get my farms up(because I do everything backwards), A whole bunch of 'Mountain Gnomes'(might be specific to the mod)Guzzled ALL OF MY BOOZE before my military(3 dwarfs[suikas] who had just arrived and had no training whatsoever) completely killed every gnome. I had been digging into the caverns, and had breached many, but, not daring to adventure inside(I've never actually gotten very far, either I get bored because I never get any migrants or my forts are destroyed, so I've never actually made a military force), I just kept digging deeper. About the start of autumn, a migrant arrived and IMMEDIATELY HAD A FEY MOOD. Plus, he was a gem cutter, so he required a jewelers, which I hadn't built yet. I built him his shop, he grabbed some gems from the quantom stockpile of probably 300 stone +50 gems(i think he grabbed 3)And immediately started work. WHILE he did that, I found the Magma Sea! message. And you know what else? THAT'S RIGHT. YOU KNOW WHAT I AM SAYING. THE WONDERFUL COTTON CANDY was found. All of this happened BEFORE THE FALL TRADE CARAVAN CAME. I HADN'T EVEN SET UP THE ROOMS YET. It shocked and surprised me so much that I don't know what to do. I don't consider myself a newbie, but I'm no expert.
tl;dr - STUFF HAPPENED.
{btw, I can post pictures if you want)
EDIT: btw, the artifact made was a chalcedony coffer.