A red crystal

The RuneScape Wiki also has an article on: rsw:Heart crystalThe Old School RuneScape Wiki also has an article on: osrsw:Heart crystal

A red crystal
Released							20 August 2003 (Update)
Members							Yes
Quest item							Legend's Quest
Properties
Tradeable							No
Equipable							No
Stackable							No
Examine							A heart shaped red crystal
Values
Value							2,000 coins
High alch							1,200 coins
Low alch							800 coins
Advanced data
Item ID							1222

? (edit)A red crystal20 August 2003 (Update)YesLegend's QuestNoNoNo? (edit)? (edit)A heart shaped red crystal20002,000 coins1,200 coins800 coins120012221222

A red crystal is a quest item used in the Legend's Quest. It's created by killing the three knights Ranalph Devere, Irvig Senay and San Tojalon in the dungeon under Kharazi Jungle to obtain a lump of crystal, a chunk of crystal and a hunk of crystal, which can then be combined to form this heart-shaped red crystal in the Ancient Lava Furnace. Once combined, it must be used on "Eye of the Dragon", a rock scenery that resembles a dragon eye on the minimap to produce a glowing red crystal.

Messages

Selecting the 'inspect' option:

As the crystal touches your hands a voice inside of your head says..

Voice in head: Bring life to the dragons eye.