Rune rock

At level 85 Mining you can mine rune ore and with 85 Smithing or higher can start to smith Rune items. You recieve 125 Mining experience when mined. You also have the chance of recieving an Uncut Saphire, Emerald, Ruby, or Diamond.

Locations

 * Two Runite ores can be found in level 50 Wilderness above the Lava maze. This is the only Free to play Runite spot in the entire game! It's worth noting that you can be killed by Pk'ers, be careful!
 * Two rocks can be found in the Heroe's guild Dungeon. You must have completed the quest: Heroes quest to enter.
 * One rock can be found in the Lava maze dungeon. Beware that this is guarded by Two Black Dragons, 64 poison spiders, and is in the wilderness!

Respawn rate
The respawn rate of Runite is determined by the number of players on the world at the time. The more popular results in the faster the ore respawns.

Ex: If the world is empty it would take 25 minutes to respawn. If there are 2000 players then it would take 12 minutes and 30 seconds to respawn.

The following equation can be used to determine the respawn rate, with X being the # of players: 25 - X/160 minutes.

Trivia

 * This is the highest level ore you can mine. Yet not the best metal in the game. Dragon and Barrows being better. Although Rune is the best boots, and best Free to play metal.
 * There are 5 Runite ores in the game total.
 * A popular method when mining Runite is to "world hop".