Gems

Gems can be obtained from mining, trading with other players, and as occasional monster drops. Using the Crafting skill, uncut gems can be cut, combined with precious metals to make jewellery and then enchanted using the Magic skill. Gems can also be cut into gem bolt tips. Wearing a charged Amulet of Glory increases a player's chances of unearthing a gem while mining. However, one does not receive any additional Mining experience if one manages to mine a gem in such a fashion.

Gems also are a frequent drop from a wide range of monsters and are occasionally given out as gifts from various random events. Random events and monster drops generally give sapphire, emerald, ruby or a diamond. Dragonstones are dropped only by some of the higher level monsters, although any monster that drops gems and many random events, can drop or give Halves of a key to unlock a chest in Taverley, the contents of which include uncut dragonstone.

Richstones are said to be the most expensive gems as the only way to achieve them is by trading in 5 Uncut Onyx's and 2600 coins to achieve them.