cant equip higher level spirit gem

im already using low level herald of thunder and wind dancer

and i remembered i have higher level of them in my gem stash
so i tried to equip the higher level spirit gems and it says

requirements not met

so i checked the requirements

level check
attri check
martial weapon check???

it says any martial weapon
but im using spear on weapon set1
and crossbow in set2

so, what are martial weapons again? XD


also pls fix the "sort item by level" for uncut gems