Minecraft wiki entry for Diamonds, associated text: Diamond pickaxe (allows mining obsidian for the enchanting table, and to make a Nether portal. Highly recommended with the first diamonds the player collects) (renewable from toolsmith villager)
Enchanting table
Diamond sword (renewable from weaponsmith villagers)
Diamond axe (renewable from toolsmith and weaponsmith villagers)
Diamond shovel (renewable from toolsmith villagers)
Diamond helmet (renewable from armorer villagers)
Diamond chestplate (renewable from armorer villagers)
Diamond leggings (renewable from armorer villagers)
Diamond boots (renewable from armorer villagers)
Jukebox
Diamond hoe (renewable from toolsmith villager)