Buy RS3 Alchemical onyx necklace
The alchemical onyx necklace is a members-only necklace in RuneScape 3. It is made by smelting an alchemical onyx with a gold bar at a furnace. Making it needs level 91 Crafting and a necklace mould, and it gives 4,115 Crafting experience.
The main reason players want this necklace is to make the grace of the elves necklace. You can enchant it with the Lvl-6 Enchant spell, which needs level 87 Magic, 1 cosmic rune, 20 fire runes, and 20 earth runes. You can also use an enchant onyx tablet, which has no skill requirement.
The necklace has no combat stats. It gives no damage, accuracy, armour, or prayer bonuses. It is very light, tradeable, and noteable, but it does not stack.
It can also be disassembled for Invention. It gives 27.3 experience and 5 materials with 0% junk chance. The most common materials are delicate parts, connector parts, and smooth parts. It can rarely give precious components or enhancing components. The necklace has a high alchemy value of 202,000 coins.