Family Crest

Official quest description: There is a man in Varrock who needs a bit of help. He is of noble heritage, but without his family's crest, he can't prove it. Unfortunately, his three sons took the crest with them when they left, scattering all across RuneScape.
Release date: 9 April 2002
Start: Talk to Dimintheis in south-east Varrock.
Difficulty: *****
Length: Medium
Members only: Yes
Requirements:
40 Mining
40 Smithing
59 Magic (56 with Wizard's Mind Bomb or 55 with Magic potion or 53 with a spicy stew) (Make sure you are on the standard spellbook.)
40 Crafting
Items needed:
Cooked shrimp
Cooked salmon
Cooked tuna
Cooked bass
Cooked swordfish
A pickaxe
2 cut rubies
A ring mould
A necklace mould
2 anti-poison potion
Runes to cast all 4 elemental Blast spells at least once. (13 air runes, 3 water runes, 4 earth runes, 5 fire runes, and 4 death runes.) the blast spells must hit so bring extra.
Recommended:
Teleport runes
A charged Amulet of Glory
If players have below 59 magic, they are advised to bring more than 1 Wizard's Mind Bomb or more than 1 dose of Magic Potion (2 to 4 are advised).
Monsters to kill:
Chronozon (Level 170)
Spoiler warning: Plot and/or ending details follow.
edit Walkthrough
Beware: This quest will take you into the wilderness
[edit] The Crest
To begin, talk with Dimintheis, who lives in the very south-east corner of Varrock, in a small house in the fenced-off area. He'll tell you about how without his family's crest, he can't prove his heritage and take back his estate. His sons took the crest when they left, and he doesn't know where they all are, although last he heard, Caleb was working as a chef in Catherby.
[edit] Caleb
Head to Catherby. In the middle of the town—just south-west of the farming shop and north-east of the bank—is a chef, usually inside the building with the sink, although he wanders outside sometimes. This is Caleb. Talk to him, and he'll say his brothers and he accidentally broke the crest into three parts and each of them ended up with a piece. Luckily, he still has his piece, although he's not going to just hand it over to any passing stranger. He has an important event coming up, and he needs some fish for a special salad. Get them for him, and he'll give you the piece of the crest.
What you need is shrimp, salmon, tuna, bass, and swordfish—all cooked. All but the salmon can be fished right there in Catherby. However, there is a fly-fishing spot just north-west of Camelot, where you can fish salmon. Once you have all of that, give the cooked fish to Caleb, and he'll give you the piece as promised, along with a little bit of info: He'll say that the gem trader in Al Kharid might know more about the location of Avan.
[edit] Avan

Avan wearing his Yellow cape at the mines.
Talk to the gem trader in Al Kharid, and he will remember the person you're looking for. He directs you north toward the gold rocks in a pit in the desert, the Al Kharid Mine. Head there, and talk to the man wearing a yellow cape wandering around just at the entrance to the pit. This is, indeed, Avan, as he'll tell you when you ask him. He's not giving up his piece of the crest, though. Not unless you can help him win the affection of a certain lady by getting him a ring and necklace made out of perfect gold. Unfortunately, the stuff there in the desert isn't nearly good enough. He'll tell you a dwarf named Boot might know something about where to find the gold.
Make your way to Falador, and go into Dwarven mines. Use the stairs to the mine that are north-east of Falador's east bank and just east of the Party Room. From the stairs, head north, turn west where the tracks bend, go south again, and turn west to head down the tunnel. Continue traveling west past the anvils, and you will find Boot wandering around down there. Talk to him, and ask him about perfect gold. He'll come up with a likely location: It's a small dungeon just between Ardougne and Witchaven. (You've already been there if you've done the Slug Menace quest.) It is recommended that you wear melee-resistant armour during this part. If you are a lower level, you will take damage.
Head to the dungeon. Make sure to get your pickaxe as well as some food and armour, as there are a bunch of level 28 Hobgoblins, level 53 Ogres, and a few level 122 Hellhounds that you'll have to either fight or avoid. Walk further inside (not into the false wall—if you have done Slug Menace—but down the tunnel). Walk east, and then a little bit to the south will be a small caged area with a couple of Hellhounds inside, along with the gold rocks you need to mine. To the north and south are two rooms with levers in and outside of them. You'll have to do a little bit of a lever puzzle here to open the gate to the Hellhounds.
Go to the North wall, and pull that lever up.
Go to the South room, enter through the east door, and pull that lever up. Exit through the west door.
Back to the North wall, and pull the lever down.
Go inside the North room, and pull that lever up.
Go outside the room, and pull the lever on the North wall up.
Go back to the South room, enter through the west door, and pull the lever down. Exit through the east door.
Open the cage, and mine 2 "perfect" ores.
Now get your rubies, your ring mould, and your necklace mould and go to any furnace that's handy (perhaps the one in Ardougne or in Al Kharid). Smelt the ore into perfect gold bars and then make the perfect ring and perfect necklace just like you would make any other ruby ring and necklace, just make sure to use the gold you just got. Once you have the items, head back to the Al Kharid Mine and give them to Avan. As a reward, he'll give you the second piece of the crest and, with further coaxing, will tell you how to find his brother.
[edit] Johnathon
The last brother—Johnathon—is holed up in the Jolly Boar Inn, just north-east of Varrock and near the Lumber Yard and the edge of the Wilderness. He's on the first floor (2nd floor by US standards), huddled in a room. Bring your anti-poison potion with you, and climb up the stairs to talk to him. He'll tell you he got bit by a poisonous spider. Give him the antidote, and he'll be very grateful and be able to relate to you what happened. Apparently, he got cocky and decided he wanted to try to kill a powerful demon named Chronozon. The demon sent him packing and in the process stole the last piece of the crest. If you want it back, you'll have to finish what Johnathon started.
The demon, unfortunately, resides in the Edgeville Dungeon near the Earth Obelisk. This is part of the Wilderness. If you're not careful, you could be killed by revenants just trying to get there or get back, although this is rare to happen, as it is in very low level Wilderness. You'll need to bring food, armour, an anti-poison potion for the poison spiders, and enough runes to cast each elemental Blast spell at least once, although it will probably take more than one casting, especially if you're lower level. This is because if the spell just "splashes" on him, it doesn't count. You have to actually hit Chronozon with a Wind Blast, Water Blast, Earth Blast, and Fire Blast. When you do hit him with each of those spells, it will weaken him and make him a little easier. Chronozon is extremely weak to blast spells. With a high magic level and no negative bonuses, it is possible to kill the demon with only two or three more spells after the first four.
When you finally do kill him, grab the crest piece (make sure you have it, not just the ashes!) and hightail it out of there (preferably teleport: Remember, Chronozon will respawn and revenants may appear).
[edit] The Crest Reassembled
Now that you have all three crest pieces, put them together to make the Family Crest and then make your way back to Varrock. Give the crest to Dimenteis, who will be very, very pleased to have it back. Congratulations,Quest complete!