Cosmic rune



The Cosmic rune is a rune used for primarily in enchanting spells. Enchanting spells enchant jewellery, such as rings and amulets, into something that has an effect when worn or operated. For example, when the player casts Enchant Level 4 Jewellery on diamond ring, the ring will become a ring of life, which instantly teleports the wearer to the player's spawn point if the wearer's Life Points drop below 1/10 of the full amount. Cosmic runes are also used for the Lunar spells NPC contact, Cure Me and Cure Group. They can be crafted at the Cosmic altar in Zanaris through the Runecrafting skill at level 27 for 8 experience per pure essence. At level 59 Runecrafting, the amount crafted doubles to 2 Cosmic runes per pure essence.

Drops

 * Dark Wizards (north of Goblin Village, Dark Wizards' Tower and south of Varrock)
 * Big Frogs
 * Cockroach workers
 * Hill giants
 * Hobgoblins
 * Ghostly warriors (can only be accessed after completing the Spirit of Summer quest)
 * Zombies
 * Ice Giants
 * Black knights
 * Moss Giants
 * Cockatrices
 * Banshees
 * Chaos Dwogres
 * Corporeal Beast
 * Rock Crabs (From inside a Casket)
 * Saradomin Wizard

Other Sources
Upon successfully mining to the centre of a Shooting Star from Distractions and Diversions and speaking to the sprite, you can receive up to 152 Cosmic Runes (for 200 stardust).

Ice Plateau in Level 48 Wilderness has a respawn point for Cosmic Runes.