The Road to Necropolis: Arcane Legends Halloween Tiered Rewards!

[FluffNStuff]

You forgot that regular gems also give damage stats, a grand glacial gem gives me 5.4 dmg.

That is effective damage, not RAW damage ...
My rogue has 407% Bonus Damage.
The Effective Damage is 574.
The RAW Damage is 143.
A Grand Fire Gem is 6 Dex which equals 3 Bonus damage. That get caculated as .03 * 143 = + 4.3 Effective Damage.
A Regular Soul Stone gives 7 Raw damage. Raw damage gets multiplied by current bonus damage. So it gives 28 Effective Damage.
It is a balancing act though, since if you give up to much dex, your Bonus Damage will go down and those raw damage will be worth less ...