Damage bonuses on Familiar Pets

Hello, here !

I’m actually trying to play a summoning Conjurer.

He’s pretty efficient (lvl 58 actually), but I was wondering how to estimate the damage bonuses for all the pets.

The character sheet only show the global damage bonus, without any nuances.

So for example, how to know if this ring could be valuable or not :
https://gracefuldusk.appspot.com/items/7855-Glyph-of-Kelphat’Zoth

The ring gives an interesting Lightning orientation for the pet’s damages.
But how could we see the amount of elemental damage, the amount of conversion etc… ?

I was happy when i looted thos ring, then I realized it was impossible for me to say if this ring was a gain or not.

Thx for your answers, and sorry if my English is somehow weird ^^…