Farm aethersand is a timesink, but once you know how to farm them, are easy.

Ignore lvl 56 and lvl 58 items. They don't produce leaf/landborne aethersand. Other tool is your rotation to get 8/8 collectability



Usually, 1 each 5 lvl 60 item gives me 1 hq landborne or leafborne. Sometimes you reducted 10 and don't get one, and other times you reducted 2 and get both on them.