Family Crest/Quick guide

Walkthrough

 * Talk to Dimintheis in the south-east corner of Varrock.

Caleb's piece

 * Gertrude's house is west of Varrock, talk to Caleb.
 * Give him Swordfish, Bass, Tuna, Salmon and Shrimp to receive a crest part.
 * Ask Caleb where the rest of the crest is.

Avan's piece

 * Al Kharid, talk to the gem trader.
 * Run north to the Al Kharid mine, talk to Avan.
 * Go to the Dwarven Mine (under Ice Mountain). South-west of the general store, talk to Boot.
 * East of Ardougne docks are some old ruins. Climb down the ruins.
 * Logging out will reset this puzzle
 * Run north and pull the lever next to the door.
 * Run into the southern room and pull the lever.
 * Run back to the northern wall and pull the lever.
 * Enter the northern room and pull the lever.
 * Leave the room and pull the lever on the northern wall.
 * Run into the southern room and pull the lever.
 * Mine 2 gold ore in the hellhound room.
 * Smelt the ores into a ruby ring and ruby necklace at any furnace.
 * Give them to Avan.

Johnathon's piece

 * Talk to Johnathon on the first floor of the Jolly Boar Inn north-east of Varrock.
 * Use an antipoison on him.
 * Teleport to Edgeville and prepare for the final fight (multiple casts of the four blast spells).
 * Enter Edgeville Dungeon and run north, then west.
 * Cast air, water, earth and fire blast on Chronozon - they must damage him to count.
 * Kill him and take the crest piece.

Finishing up

 * Assemble the crest by using the parts on each other.
 * Talk to Dimintheis.
 * Quest complete!