The white jewel is a mysterious gemstone the player will find during Koschei's Troubles, when they float the toy ship in water at the well in Rellekka.
When brought to Koschei the deathless, it will trigger a memory of what happened on the ship when he was lost at sea. He will reveal that he was attacked by an assassin, who branded him on his chest. The ensuing battle tore the ship apart.
Koschei will be able to recall no more, but will note that the jewel is the key to unlocking his mind and revealing his past. Players are then given a chance to try and interact with the jewel in order to help unlock more memories.
- If the player decides to try and cut the jewel, it will turn into a blue jewel.
- If the player has 90 Prayer, they may search it for curses, which will turn it into a green jewel.
- If the player attempts to crush the jewel using 90 Strength, the pressure will turn it into a red jewel.
| NPCs | |
| Items |
 Balmung Blue jewel Green jewel Red jewel Strange chest Toy ship White jewel |
| Scenery |
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| Rewards |
 Antique lamp Achromatic Balmung Cobalt Balmung Crimson Balmung Viridian Balmung |
| Miscellaneous | Quick guide • Transcript |
