Helm
Flawless Royal Diamond (or highest available for CDR)
Flawless Royal Amethyst (or highest available for Toughness)
Torso and Pants
Flawless Royal Ruby (or highest available)
Weapon
Flawless Royal Emerald (or highest available)

• Bane of the Trapped — staple multiplicative damage increase. Note that the gem is self sufficient, proccing itself when fighting in melee range, where the Barbarian fights almost by default.
• Bane of the Stricken — almost mandatory gem for Greater Rift progression, as it is designed to whittle down the scaling health numbers of monsters with a percentage-based increase on successive attacks.
• Boon of the Hoarder — synergizing with other farming mainstays like Avarice Band Avarice Band and Goldwrap Goldwrap, this gem will not only keep you rich, but also sped up and safe during normal rift farming.
• Bane of the Powerful — the speedfarm counterpart to Bane of the Stricken, Bane of the Powerful offers a solid overall damage and survivability increase as long as your killing speed does not fall behind the timer of the gem.

Situational gems

• Esoteric Alteration is a defensive cornerstone in facetanking builds, protecting you against bursty elemental affixes.
• Simplicity's Strength amplifies primary skill damage, which is particularly useful for a Frenzy build.
• Taeguk is a great addition to a channeler Barb, which you will be by using anything Whirlwind-related.

Kanai's Cube choices are highly build- and content-specific, making them hard to summarize. Generally speaking, Barbarians should store the powers of the following items in the Cube as soon as they have the materials available:
x The Furnace
x In-geom
x Messerschmidt's Reaver
x Oathkeeper
Ambo's Pride
Fjord Cutter
Blade of the Tribes
The Gavel of Judgment
Fury of the Vanished Peak
Bastion's Revered
Standoff
The Three Hundredth Spear

x Pride of Cassius
Dread Iron
Girdle of Giants
Lamentation
x Vile Ward
Mortick's Brace
Bracers of Destruction
Bracers of the First Men
x Skular's Salvation
Vambraces of Sescheron
Lut Socks
Aquila Cuirass
x Nemesis Bracers

Band of Might
Obsidian Ring of the Zodiac
x Ring of Royal Grandeur
x Convention of Elements
Avarice Band

Core
Movement Speed up to 25% cap
Strength
Vitality
Maximum Fury (depends on build)

Offense
Critical Hit Chance
Critical Hit Damage
Cooldown Reduction
Attack Speed

Defense
All Resistance
Life %
Armor
Life Regeneration

Utility
Area Damage
Resource Cost Reduction
Life on Hit
Globe Radius