you can do, but is not mandatory
https://www.grimtools.com/db/items/8130
https://www.grimtools.com/db/items/9116
build [1.1.6.2] The unlikely hero - Chaos Ravenous Earth/Mines Defiler but does not use any of those items, instead uses off-hand that converts the vitality to chaos 
Dont think I have seen chaos ravenous with the helm and glove I listed