Oh, I'll still carry on trying but I'm not spending gems on a decoration. I've collected from it at least 4 times a day most days and sometimes I sneaked a 5th collection in when I happened to wake in the middle of the night but still I am short 2 braziers. Unless they tweak the drop rate, it's not happening.
I've scaled back on sunstone production now as I reached 3200 as expected. Still collecting for the community prize but won't buy any more rocks to chop.