D2RHub
Occult Codex

Occult Codex

Book

Type
Book
Defense
98–142
Block
8%
Required strength
91
Required level
50
Superior defense (+5–15%)
102–163
Durability
20
Max sockets
2
Item level (qlvl)
66

Normal, exceptional and elite

NormalCodexExceptionalDark CodexEliteOccult Codex
Defense6–1044–5598–142
Block8%8%8%
Required strength184791
Required dexterity———
Required level123350
Durability202020
Max sockets222
Item level (qlvl)164566

The Horadric Cube upgrades unique, set and rare armor one tier, keeping their stats (the requirements become the new tier's). White, socketed and magic items can't be upgraded.

Normal → Exceptional

Exceptional → Elite

All armor upgrade recipes on the Cube Recipes page

Best places to find

MephistoBoss · Durance of Hate Level 31 in 319per kill
DiabloBoss · The Chaos Sanctuary1 in 334per kill
BaalBoss · The Worldstone Chamber1 in 342per kill
DurielBoss · Tal Rasha's Chamber1 in 693per kill
ColdcrowSuper unique · Cave Level 11 in 728per kill

Hell, /players 1, no Magic Find. Every source, with your players, Magic Find and Terror Zones, in the Drop Calculator.

Runewords for Occult Codex

Runewords that fit this base type, up to its 2 sockets. A runeword needs exactly as many sockets as it has runes.

Uniques and sets on Occult Codex