Explanations starting from 2:00

PoB [3.25]: https://pobb.in/P40bwVui7tfE

I think this is the strongest gem in the game in terms of cost/damage ratio currently. You can push this even further if you find a 4 link Iron hat, unfortunately I have not had any luck so far.

Prices (roughly):

Amulet ~ 3d

Tincture ~ 3d

Gems ~ 2d

Cluster jewels ~ 2d

Replica Trypanon ~ 1d

Boots ~ 1d

Jewels ~ 1d

Iron Hat ~ priceless

Hatchling ~ free