So I just happened to run across a Sapphire-laden Cobalt vein on my way back to my claim today. Spent about half an hour poking around and found another one to round out my 100. Built my Amaranthine Forge, then built a Cobalt Pick there... and it was green.
56 speed and a decent (109 or so) damage, but it's also tiny. Oh well, at least I had previously figured out the trick where if you have multiple picks, you can equip the one you want to keep and it will use the other one in the recipe. So I have a lousy Cobalt Pick for mining Rubicite and Rubies, and my demon of a Mighty Veridian Pick with 112 damage, 75ish speed, 150 size,
and 23 reach! The Cobalt Pick will be one I won't be sad to lose to the Indigo Pick recipe when I can dig up some rubies, at least.
Also found a neighbor a few plots away with a sifter that does cotton. Was able to get another ~20 out of 90 bags, lol. Now to dig up a little more Elemental Silver and try for a second blue Assessor's Ring to replace my green one (I've got one around +3 and one nearly +5 Discovery.. I'd love to crank that up to tennish...), then I think I'm going to look into some +size jewelry for when I want to just dig person-sized mine shafts in a straight line. My pick is technically big enough to do that, but depending on how deep each bite is, sometimes there are awkward ridges that are a little too tight, which kind of ruins the point.
I also discovered I'm too easily amused. I was perfecting my technique to create large, nearly perfectly cylindrical holes in the ground. It seriously looks like somebody took a fifteen-foot diameter drill bit to the ground.