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Pokemon Legends: Arceus

The Diamond Clan's Treasure Guide and Walkthrough (Request 89)

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Find out how to get the Adamant Crystal in The Diamond Clan's Treasure Request to transform Dialga into its Origin Form in Pokemon Legends: Arceus. Read on for a walkthrough of the Request, including rewards, location, how to complete it, and the Pokemon you need!

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Steely Lucario The Pearl Clan's Treasure

List of Contents

How to Unlock The Diamond Clan's Treasure

Unlock Location

Adaman Location
The Diamond ClanEnlarge
Beside Lake Valor
Request Location in Map
The Diamond ClanEnlarge
Crimson Mirelands

Unlock Condition

After completing the main story of Pokemon Legends: Arceus, you can unlock this request by talking to Adaman beside Lake Valor in Crimson Mirelands.

Post Game Content and 100 Percent Guide

The Diamond Clan's Treasure Information

#89 The Diamond Clan's Treasure
The Diamond ClanEnlarge
Requested By Adaman
Description Adaman of the Diamond Clan has challegened you to a battle. Claim victory against him to find out more about the treasure he mentioned.
Recommended Rank 8

The Diamond Clan's Treasure Rewards

Reward Qty
Adamant Crystal Image Adamant Crystal
 x1
Comet Shard Image Comet Shard
 x3

The Diamond Clan's Treasure Walkthrough

Mission Objectives

Steps to proceed through The Diamond Clan's Treasure
1 Head to Crimson Mirelands and and talk to Adaman at Lake Valor
2 Battle and defeat Adaman to complete the request.

Battle against Adaman

Battle Against Adaman

During the battle against Adaman, he will send out a Vaporeon, Leafeon, and Umbreon all at the same time. It is best to start off by defeating Vaporeon and Umbreon due to their lower level before taking on Leafeon.

Pokemon with super effective moves against all three Pokemon and are not weak to their types are recommended for this battle. Hisuian Decidueye, Lucario, and Togekiss are a few great Pokemon to bring along to this fight.

Adaman's Pokemon
Vaporeon ImageVaporeon
Lv. 32		 Leafeon ImageLeafeon
Lv. 64		 Umbreon ImageUmbreon
Lv. 32

Dialga Origin Form is Unlocked

PLA Dialga Origin Adamant Crystal

After defeating Adaman during the battle, you will receive the Adamant Crystal, which you can use to transform Dialga into its Origin Form. You can always transform Dialga back into its regular form by using the Adamant Crystal again.

How to Catch Dialga - Origin Form and Learnset

The Diamond Clan's Treasure Pokemon

Pokemon Required for the Quest

There are no Pokemon required for this quest.

Previous and Next Guides

◀ Previous Request Next Request ▶
Steely Lucario The Pearl Clan's Treasure

Pokemon Legends: Arceus Related Guides

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All Request Walkthroughs and How to Unlock

List of All Requests

No. Mission No. Mission
1 Wurmple Can Evolve 2 Adorable Starly
3 What Did Shinx's Ears Look Like? 4 Big Buizel, Little Buizel
5 What It Takes to Be Awesome 6 Mushroom Cake Marketing
7 Playing With Drifloon 8 Bothersome Bidoof
9 Zubat's Eyes 10 Wurmple's Evolved
11 The Timbre of the Fields 12 A Perfect Pickling Stone
13 Trees that Bear Berries 14 Berry Helpful
15 Balloon Race in the Fieldlands 16 Strange Happenings at Midnight
17 To Bloom or Not to Bloom 18 Please! Make Me a Pokeshi Doll!
19 A Peculiar Ponyta 20 The Mysterious Will-o'-the-Wisp
21 Back-Alley Mr. Mime 22 Eerie Apparitions in the Night
23 Getting Ahold of New Wares 24 Inspiration from Hippopotas
25 The Pokemon in the Woodland Photo 26 Aim for the Big Leagues
27 Help Wanted: Plowing the Fields 28 Measuring Your Compatibility
29 The Search for Bitter Leaves 30 A Beautiful Rose...
31 Setting Up the Bogbound Camp 32 The Headache-Stricken Psyduck
33 What a Massive Mushroom! 34 Croagunk's Curative Poison
35 Battling with Pachirisu 36 Watering with Care
37 The Fragrance of Nostalgic Herbs 38 Gone Astray...in the Mirelands
39 All about Magikarp 40 The Charm Lost in the Swamp
41 An Elegant Tail 42 Help Wanted: Watering the Fields
43 More New Wares 44 The Pokemon in the Nighttime Photo
45 Shellos of the East and West 46 Setting Up the Coastlands Camp
47 Balloon Race in the Coastlands 48 The Taste of Home
49 Keep an Eye Out for Aipom! 50 Double the Tails, Double the Fun
51 Coming Up Roses 52 Eevee's Evolutions
53 Octillery's Ink 54 Serving Up Swap Snacks
55 Poor, Peckish Piplup 56 Getting Help from Machoke
57 The Taste of Honey 58 Gone Astray...in the Coastlands
59 Misdreavus the Hairstyle Muse 60 Help Wanted: Rock Smashing in the Fields
61 Even More New Wares 62 The Pokemon in the River Photo
63 Fancy, Fashionable Wormadam 64 Getting to Know the Ghosts
65 Setting Up the Mountain Camp 66 The Sea's Legend
67 The Clefairy's Moonlit Dance 68 A Nosepass to Guide the Way
69 Gone Astray...in the Highlands 70 Colorful New Looks
71 New Wares Yet Again 72 Pesselle's Easy Errand
73 Which is the Real Burmy? 74 A Bit of Help from Blissey
75 Kirlia the Hairstyle Muse 76 Mushroom Hunting with Swinub
77 Gone Astray...in the Fieldlands 78 Setting Up the Icepeak Camp
79 Balloon Race in the Icelands 80 The Perfect Pickle Recipe
81 In Search of a Fiery Pokemon 82 Traces of a Lost Village
83 Snow-White Vulpix in the Snow 84 The Bergmite Enthusiast
85 At Home under the Eaves 86 Gone Astray...in the Icelands
87 Rolling with Spheal 88 Steely Lucario
89 The Diamond Clan's Treasure 90 The Pearl Clan's Treasure
91 On the Trail of Giratina 92 A Token of Gratitude
93 The Darksome Nightmare 94 Incarnate Forces of Hisui
95 A New Anomaly 96 Massive Mass Outbreak in the Fieldlands
97 Massive Mass Outbreak in the Mirelands 98 Massive Mass Outbreak in the Coastlands
99 Tricky Treat Strategy 100 Massive Mass Outbreak in the Highlands
101 Massive Mass Outbreak in the Icelands 102 Daybreak
103 Digging for Tomorrow 104 Battling the Security Corps' Secret Weapon
105 The Ultimate Balloon Race 106 Adaman's Hope
107 Irida's Wish 108 Bidoof's Path of Solitude
109 Eevee's Path of Solitude 110 Wormadam's Path of Solitude
111 Abra's Path of Solitude 112 Blissey's Path of Solitude
113 Sneasel's Path of Solitude 114 Rotom's Path of Solitude
115 Bastiodon's Path of Solitude 116 Roselia's Path of Solitude
117 Magikarp's Path of Solitude 118 Roserade's Path of Solitude
119 Kleavor's Path of Solitude 120 Lilligant's Path of Solitude
121 Wurmple's Path of Solitude 122 Kricketot's Path of Solitude

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