When to buy sightstone as a jungler?

1. When you buy cinderhulk and are planning on going tanky.
2. When you have a picks comp and need to make picks on solo enemy targets (better vision control allows you to do this)
3. I often pick it up when behind or my support isn't warding enough.

I get it when vision is more important than another defensive or offensive item. It's also very good when you want a safe laning phase, such as when you have a double scaling composition.

If the support has sightstone and everyone upgraded their trinkets, then you probably wouldn't need to buy sightstone. However, we all know that rarely happens. Personally, I think it should be the 3rd item. That way the jungler wards the top half of the map and the support the bottom half.

Wards=wins in 95% of games.

1. when you are planning on going cinderhulk and your jungler can clear at least decently, i would recommend going sightstone right after upgraded machete.

2. when you are behind so that you cannot duel the enemy jungler, always get that item as fast as you can, no matter your item or planned build

3. if you CAN infact duel the enemy jungler in a safe way, there is no need to get it aside from cinderhulk builds. just buy some wards.