What cave do i find rarity in now?

I refuse to buy this ring for 8Le. however for the life of me i cant figure where to get it now. everytime i look up a spot and go there its only a t2 or nothing at all. is it from the pigman outpost cave and im just unlucky or is there somewhere else i can get it?

 

It should be found in T3-T4 chests in very early-game areas (Lv. 1-5). It is a very rare find though, hence the name. The only other efficient way to get one, as you mentioned before, is buying it off the TM for 8 LE.

 

Early game caves worked for me when I had to get some for ironman, in the areas around emerald trail, maltic/katoa ranch and nivla woods.
The caves themselves should be:

• Pigman Outpost
• Corrupted Passageway
  
• Old Growth Rot
• Roots of Infestation
• Fungas Log
• Hex Keep Gateway
• Fire & Water
• Derelict Mine
• Ancestor Grotto
• Crab Fighters

Also obviously lb and lq will boost your chances of finding one.

 

There's troll tower. I refuse to elaborate.