Gems can be obtained from mining and trading with other players. 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 whilst 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 Half of a keys to unlock a chest in Taverley, the contents of which include uncut dragonstone.
The statutes in Bandos's throne room frequently drop cut gems from sapphire through diamond, making the room popular for some gem hunters who can kill the statutes easily. The quest The Chosen Commander is required for access to the throne room.
Gems can also be mined from the gem rocks in the north-west corner of Shilo Village, Lunar Isle Mine and occasionally in Tai Bwo Wannai Cleanup minigame. Gem rocks contain, in order of highest probability, opal, jade, red topaz, sapphire, emerald, ruby and diamond.
The original free version gems were officially released in the crafting update in May 2001. In March 2001, Jagex made gems appear while mining, although it was unintentional.
Because of the high price of uncut gems, it is recommended that players keep the gems they find if they are mining lower levelled ores such as coal, but drop them if they are mining ores such as adamantite ore or runite ore.
Valuables are items that have no "practical" use, but are generally worth a lot of money. Most gems and jewels are very valuable, and many of them can even be sold to NPCs for lots of gold.
The following items are considered "valuable".
||0.20||Vampire, Mummy, Banshee, Lich, Quara Pincher, Vashresamun, Orshabaal, Morguthis, Quara Hydromancer, Hellhound, Ice Golem, Thul, Zugurosh, Mutated Bat, Golgordan, The Plasmother, Zevelon Duskbringer, Latrivan, Ushuriel.|
||0.30||Marid, Defiler, Dipthrah, Orshabaal, Zugurosh, Annihilon, Fahim The Wise.|
|Countess Sorrow's Frozen Tear||
||0.10||Ghazbaran, Grynch Clan Goblin.|
|Crystal of Balance||
|Crystal of Focus||8.00||Nightmare Scion.|
|Crystal of Power||
||8.50||Infernalist, War Golem.|
||1.70||Vampire, Wyvern, Hellfire Fighter, Hand of Cursed Fate, Plaguesmith, Vampire Bride and Zulazza the Corruptor|
|Giant Shimmering Pearl||
||0.80||Killer Caiman, Water Elemental, Roaring Water Elemental, Annihilon|
||0.10||Almost every creature.|
||18.00||Dark Torturer, Ferumbras, Ghazbaran, Hellhound, Infernalist, Juggernaut, Lord of the Elements, Undead Dragon, Yakchal, Zugurosh, Orshabaal, Blightwalker, Ushuriel, Golgordan, The Many, Chizzoron the Distorter.|
||0.30||Efreet, Defiler, Orshabaal, Thalas, Ushuriel, Zugurosh, Annihilon, Ghazbaran.|
||0.30||Grynch Clan Goblin, Betrayed Wraith, Hellfire Fighter, Massacre, Grim Reaper, Dark Torturer|
||0.10||Orshabaal, Defiler, Juggernaut, Destroyer, Blightwalker, Hand of Cursed Fate, Undead Dragon, Spectre, Bones, Nightmare, Demon, Lost Soul, Betrayed Wraith, Hellhound, Grim Reaper, Diabolic Imp, The Imperor, The Plasmother, Vampire Bride, The Noxious Spawn, Water Elemental.|
||0.30||Stone Golem, Mahrdis, Grorlam, Fury, Annihilon, Zulazza The Corruptor.|
|Rusty Armor (Common)||120.00||Mutated Human, Damaged Worker Golem, Mutated Bat, Zombie, Earth Elemental, Crazed Beggar, Young Sea Serpent.|
|Rusty Armor (Rare)||120.00||Blightwalker, Medusa, Grim Reaper, Zugurosh, Lost Soul, Plaguesmith, Juggernaut, Hellgorak, Undead Dragon, Zulazza the Corruptor.|
|Rusty Armor (Semi-Rare)||120.00||Worker Golem, Massive Earth Elemental, War Golem, Hellspawn, Vampire Bride, Massive Energy Elemental, Werewolf, Water Elemental, Ghastly Dragon, Leviathan.|
|Rusty Legs (Common)||70.00||Crate (Usable)|
|Rusty Legs (Rare)||70.00||Fury, Hellgorak, Zugurosh, Leviathan.|
|Rusty Legs (Semi-Rare)||70.00||Worker Golem, Water Elemental, Leviathan.|
||0.20||Scarab, Ancient Scarab, Grynch Clan Goblin.|
||1.10||Ashmunrah, Banshee, Mummy, Spectre, Plaguesmith.|
||0.10||Ancient Scarab, Behemoth, Destroyer, Diabolic Imp, Dwarf Guard, Energy Elemental, Ferumbras, Fire Devil, Grorlam, Lizard Snakecharmer, Merlkin, Minishabaal, Mutated Bat, Quara Constrictor, Quara Constrictor Scout, Scarab, Rahemos, Thul, Ushuriel.|
||0.10||Assassin, Crypt Shambler, Deadeye Devious, Dragon, Ferumbras, Ice Golem, Lizard Sentinel, Novice of the Cult, Omruc, Orshabaal, Quara Predator, Quara Predator Scout, Valkyrie, Betrayed Wraith, Hellfire Fighter, Tiquandas Revenge, Morgaroth, Wyrm, Defiler, Madareth, Worker Golem, Golgordan, Ushuriel.|
||0.10||Acolyte of the Cult, Ancient Scarab, Bog Raider, Demon, Efreet, Elder Beholder, Ghazbaran, Golgordan, Green Djinn, Haunted Treeling, Lizard Templar, Medusa, Morgaroth, Orshabaal, Phantasm, Scarab, Thalas, Ushuriel, Water Elemental, Killer Caiman.|
|Small Enchanted Amethyst||
||0.10||Dark Magician, Mad Scientist|
|Small Enchanted Emerald||
|Small Enchanted Ruby||
|Small Enchanted Sapphire||
||0.10||Amazon, Valkyrie, Hunter, Mahrdis, Adept of the Cult, Quara Pincher Scout, Quara Pincher, Hellfire Fighter, Defiler.|
||0.10||Dragon Lord, Hydra, Demodras, Blue Djinn, Serpent Spawn, Orshabaal, Marid, Dipthrah, Dwarf Geomancer, Enlightened of the Cult, Ice Golem, Wyvern, Quara Mantassin Scout, Quara Mantassin, Frost Dragon, Warlock, Bones, Sea Serpent, Young Sea Serpent, Ferumbras, Zugurosh, Ghazbaran, Gozzler, Latrivan, Ushuriel.|
||0.10||Hellspawn, Earth Elemental, Massive Earth Elemental, Hellgorak, Ferumbras|
|Vampire Lord Token||
||0.05||Sir Valorcrest, Arachir The Ancient One, Diblis The Fair, Zevelon Duskbringer|
||0.30||Rahemos, Hand of Cursed Fate, Annihilon, Zulazza the Corruptor.|
||0.20||Blood Crab, Lich, Banshee, Quara Hydromancer, Quara Hydromancer Scout, Vashresamun, Fury, Medusa, Morgaroth, Thul, Dark Torturer, Golgordan, Ushuriel.|
||0.30||Elf Arcanist, Omruc, Lizard Snakecharmer, Lizard Dragon Priest, Dharalion, Annihilon.|