Stone key tooth

The Tooth half of a key is an item dropped by any NPC that drops gems. They are also a reward from various random events, and can be found in the chest in Taverley, the barrows chest or the evil tree rewards. It is also a reward from the Gnome Restaurant minigame, although much more infrequently than the loop half. This item can also be obtained from a random event gift box although this is rare.

The tooth half of a key is used with a loop half of a key to make a crystal key. This is used to unlock the Crystal chest, which contains a dragonstone, and other items.

Before the introduction of the Grand Exchange, both halves of the crystal key sold for the same price, at around 45,000-55,000 coins each.

The Tooth half of a key was also subject to a huge increase in price over a period of about seven days, caused by a merchant clan. This peaked on 28 May 2009, when it reached a Grand Exchange market price of 105.9k, more than two times that of the original stable price, which was around 50k. This was caused by an identical influx in the price of uncut dragonstone which was the result of a merchant clan buying out uncut dragonstones, as uncut dragonstones are most commonly obtained through use of the Crystal key, an item in which the Tooth half of a key is a part of. This was arguably one of the most influential merchant clan 'attacks' since the release of the Grand Exchange as many monsters drop the Tooth half of a key. As with most merchant clan buy outs, the item returned to a stable price of around 40k by 10 June 2009.