Major Firestone

Common, Trinket, item level 56, item 13701

Changed from Classic: the tooltip differs on the highlighted lines below.

Major Firestone

Binds when picked up

Unique

Use: Imbues your weapon with Fire, increasing your spell critical strike chance by 2% and the damage done by your Fire spells by up to 21.

Changed from Classic (see below).

Classic's version

Binds when picked up

Unique

Held In Off-hand

Equip: Enchants the main hand weapon with fire, granting each attack a chance to deal 80 to 120 additional fire damage.

Equip: Increases damage done by Fire spells and effects by up to 21.