diablo 3 augment ancient item with amethyst

For the average player, a general rule of thumb is to not worry about primals too much - they have a drop rate of something like 0,1 %. You first need to get ancient or primal rarity pieces with the correct rolls, which is quite a headache in and of itself. Generally it's advised to start augmenting with gems around level 100. Do not use the gems your build is using - gem gets destroyed in the process and after finishing the next GR, you will drop a new, level 0 one. Augmenting doesn't stack and new augments overwrite the old ones, for example augmenting with a level 50 gem will give you 250 mainstat, but if you augment the same piece of gear with a level 60 gem you will only have 300 extra mainstat from augmenting, which is why it's best to do it with highest possible levels of the gems. Each level of the gem adds 5 points of chosen stat. The gem is destroyed in the process of augmenting. Type of the gem dictates what stat is added to your gear: Ruby for str, Emerald for dex, Topaz for int, Amethyst for vit (not advisable unless on some group meta support setup).

To do that, you need a legendary gem and 3 flawless royal gems. On top of farming paragon, you have an option to augment your ancient pieces of gear. With good enough gear, the only way to progress and do higher GRs is stacking main stat (strength, dexterity, intelligence).

Diablo 3 augment ancient item with amethyst