possible to boost amulet "sunstone" ?

[Thoric]

If its possible, how boost the regen steam for the artefact amulet "sunstone" plz ? TY

[Effigy]

I don't believe it's possible to increase the amount of steam gained from the Sunstone amulet. Are you referring the item description? I think that's just flavor text and doesn't indicate a hidden way to make it regenerate more steam, but I could be wrong.