Stone blocks sell relatively often. Buy even them little Stone blocks. By the time you do find an occasional Sandstone or Sunstone, you'll have a bunch of Stone blocks that you can transmute into Sandstones, which you can transmute further into Sunstone.
I would not suggest gardening as an alternative to getting reagents, unless you already have a well sized garden growing that you regularly harvest from. I mean, who here wants to start gardening just to get reagents? I sure as heck don't. XD
I never tried crafting any houses (either observatory, or the other one from Grizzleheim. But I will attempt to craft the one from Grizzleheim).
But, if crafting the observatory is anywhere near as frustrating as the final crafting advancement test, I understand your ... pain.
Stone blocks sell relatively often. Buy even them little Stone blocks. By the time you do find an occasional Sandstone or Sunstone, you'll have a bunch of Stone blocks that you can transmute into Sandstones, which you can transmute further into Sunstone.
I would not suggest gardening as an alternative to getting reagents, unless you already have a well sized garden growing that you regularly harvest from. I mean, who here wants to start gardening just to get reagents? I sure as heck don't. XD
2 things. 1. I do not suggest stone blocks, lets do the math. You need 55 sunstone. Stone blocks these days are rare and tend to cost 175. You need 10 stone blocks for one sandstone, and 15 sandstone for one sunstone. Lets do the math: 175*10*15*55 That equals 1,443,750. That is the worth of 123 dragonshield amulets!!! (Those sell for 12888) I dont prefer sandstone either, sells for about 625, and you need 15 for each transmute, x55. 625*15*55=515,625 That is the worth of 41 dragonshield amulets. If you buy JUST sunstone, which sells for about 3500, 3500 with no transmute, x55. 3500*55=192,500. That is the worth of just 15 amulets. See how much you save just buying sunstone? Thats over 1,200,000 right there. OVER 100 DRAGONSHIELD AMULETS! :)
However, as for gardening, I do like gardening if you are a grandmaster gardener. There are certain plants, I will let you do your own research, that does help, and its pretty easy to take care off. (Black pearls and blood moss from those pink dandelions!!! Over 60 black pearls right now!)
But thats just my opinion, coming from someone who has crafted the house and has over 80 sunstone on one wizard :)