Heart of Stone

Heart of Stone is a quest released on 24 November 2014, and commences the start of the Elder God quest line. It involves Xenia, a well-known hero, that has gone mad, stealing a spell to bring the Abyss into Gielinor, and it is up to another hero to stop them, with the aid of a rune golem created by Ariane. The quest leads the heroes through sites connected with the Elder Gods, and is the beginning of unlocking their mysteries.

Conflict with Ariane and Xenia
To start, interact with Xenia and Ariane outside of the Wizard's Tower. Accept the quest and a cutscene will occur where Ariane is not letting Xenia pass because she has murdered Corvusa, an innocent man.

Pick either option (side with Ariane, Xenia, or break them both up). The choice does not matter, but it does have an effect on the golem later in the quest. Xenia finally stops Ariane, and teleports away.

Tracking down Xenia
Meet Ariane at the Old Tower, east of the beginning of the quest. She will explain that you need to track down Xenia with her, using the help of the Kinaethetic Investigation Programmable Personality Lifeform Emulator, or Kipple. Kipple is designed to adapt to any challenges it faces, and will be used to track Xenia down.

Talk to Kipple and use the Runic Frequency Modulator. Find a match and follow the signal. There are four signals altogether, each leading to the location of an Elder God (Note, Mah is not included): Karamja (Ful), White Wolf Mountain (Wen), Entrana (Bik) and the Kharidian Desert (Jas).

Entrana
Travel towards Entrana through any means. Kipple will be following you like a familiar would. The portal is located by a blue square on the minimap. It is on the northern side of the island.

Enter the portal and open the Bik door. Kipple warns that enemies may be about, and provides the player with basic weapons. Kill the BikKra's attendants with the weapons until Kipple places 3 unstable attendants near the gate. Light the three unstable attendants and the gate will disappear, along with excess attendants. Talk to BikKra, who speaks for Bik, an Elder God. Speak about Xenia, then select the option addressing BikKra as "the mighty one". He will then talk about Xenia.

Karamja
Combat equipment is needed for this part' Travel towards the Karamja Volcano and signal Kipple to find the portal. Once you have done this, enter the portal and dialogue with Fulkra will appear. Kipple will try to debate with Fulkra, while you have to fight FulKra's attendants. They are low levelled and can be killed easily with any combat style. From time to time, fire will spring up from the ground and harm the player. Simply step out of the way to avoid damage. (It is advisable to use range or mage at this part in order to avoid the fires that spawn underneath the player)

After a few minutes, Kipple will finally have finished debating. Talk to Fulkra, and respond with any dialogue options.

Kharidian Desert
East of Sophanem, combine the memories on eachother and then use them on the statue. You need 20 free inventory spaces for this puzzle.

White Wolf Mountain
Run to the middle part of the mountain, west of Taverley lodestone and retune the tracker to make a portal visible. This portal will teleport you to an ice chamber where you have to solve a power puzzle. Each beacon gives or uses certain power. You need to match the number of power (de)activating the beacons. After you solve all 5 puzzles you will be able to speak to a mouthpiece of Wen.

Lumbridge

The final portal is in lumbridge at the cemetery

Rewards

 * 1 Quest point
 * 1,500 experience lamps in both Runecrafting and Magic
 * Two 500 experience combat lamps
 * Kipple pet