The Materium serves as the ultimate chronicle of Hornet's journey through Pharloom. Located within the Citadel and eventually housed in the Bellhome, this sophisticated recording device catalogs the essence of the world—from common silk thread to the rarest relics of the Weaver tribe. Completing the Materium is not merely a task for completionists; it provides a profound look into the lore of the fallen kingdom and rewards players with a sense of mastery over their environment.

In the current version of the game, there are exactly 91 entries required to finish the Materium index. This guide provides a comprehensive breakdown of every item, its significance, and the specific actions required to secure its place in your museum.

Understanding the Materium and Its Functions

Before hunting for rare drops, players must first secure the hardware. The Materium is a specialized housing item found in the upper reaches of the Memorium, a hauntingly beautiful area within the Citadel. Accessing this location requires the double-jump ability, often granted by the Fay Down Cloak found in Mount Fay.

Once retrieved, the Materium must be brought back to the Bellhome in Bellhart and assembled. A crucial mechanic often overlooked by new players is the synergy between the Materium and the Desk. While the Materium handles materials and trophies, the Desk (purchased separately in Bellhart) is responsible for relics and cylinders. When both are installed in the Bellhome, their interfaces merge, allowing you to view all 91 entries in one unified window.

The Basic Essentials and Currencies

These entries are the foundation of Pharloom’s economy and survival. Most are unlocked automatically through natural progression, but missing a specific type of rosary can delay a full index.

1. Silk

Silk is the lifeblood of Hornet’s combat style. As the Materium entry notes, it is a fine thread spun from the soul, coveted for its mystical properties.

  • How to Unlock: This entry is available by default once the Materium is assembled in the Bellhome.

2. Shell Shards

These hardened fragments are the primary crafting component for tools and traps. In our gameplay testing, we found that maintaining a high stock of shards is essential for surviving the late-game gauntlets.

  • How to Unlock: Pick up any shell shard from a chest or a defeated enemy.

3. Rosaries

The standard currency of Pharloom. Each bead is etched with a fine patterned design, reflecting the religious and economic values of the Citadel.

  • How to Unlock: Automatically unlocks upon collecting your first rosary string.

4. Shell Rosaries

A higher tier of currency, these beads are carved from polished shell. They represent significant wealth in the lower districts.

  • How to Unlock: Collect a shell rosary, typically found in secret caches within the Greymoor or Deep Docks.

5. Pearl Rosaries

The rarest and most valuable form of currency. These gleaming pearls are intricately marked and are often found in the most dangerous corners of the Kingdom.

  • How to Unlock: Locate a pearl rosary in the high-tier areas like the Shining Citadel or the Abyss.

Flora and Food Materials

The wilderness of Pharloom is dangerous, and its flora often reflects this. Several entries in the Materium are tied to the "Great Taste of Pharloom" wish, requiring players to engage with the local culinary and botanical traditions.

6. Mossberry

A sweet fruit that grows in moist environments. While it looks delicious, its seeds are notoriously toxic.

  • Location: Found scattered throughout the initial verdant areas and the fringes of Moss Grotto.

7. Mossberry Stew

A syrupy soup made by druids. It serves as a key quest item.

  • Acquisition: Speak to the Moss Druid during the "Great Taste of Pharloom" wish to receive this item.

8. Vintage Nectar

High-quality nectar matured over generations. It represents the height of aphid luxury.

  • Acquisition: Purchase this from the merchant Creige during the "Great Taste of Pharloom" questline.

9. Pickled Muckmaggot

A pungent delicacy that is surprisingly difficult to acquire.

  • Acquisition: You must defeat the Disgraced Chef Lugoli on Sinner's Road. Upon his defeat, he drops this unique item.

10. Crustnut

A tough, furred seed found in the arid regions.

  • Location: Look for breakable walls in the upper-left section of the Sands of Karak.

Crafting and Rare Materials Index

This category contains 16 primary entries. These items are the backbone of Hornet’s gear upgrades and are often tied to specific "Wishes" (quests) posted on the community boards.

11. Pilgrim Shawl

A tattered garment worn by countless pilgrims. It speaks to the arduous journey many took to reach the Citadel.

  • Acquisition: Obtained from slain pilgrims during the "Garb of the Pilgrims" wish in Bone Bottom.

12. Flintstone and Flintgem

These are fire-related materials mined from the base of Pharloom.

  • Flintstone: Interact with the large deposits found in the lower half of Deep Docks.
  • Flintgem: These are dropped by volatile flint beetles, which only appear during their specific wish-hunt in the Marrow.

13. Craftmetal

The standard rare element for high-tier tool construction.

  • Acquisition: While it can be found in chests, the most reliable source is the shop at Bone Bottom.

14. Spine Core

Flexible fibers taken from hokers. They are prized by seamstresses for their durability.

  • Acquisition: Complete the "Flexile Spines" wish by hunting hokers in the under-fields.

15. Pale Oil

Similar to Pale Ore in the previous game, Pale Oil is used by pin masters to improve the sharpness of your needle.

  • Location: Found in the Choral Chambers or rewarded for completing the "Ecstasy of the End" quest.

16. Plasmium and Plasmified Blood

These are alchemical substances introduced by the stranger Zylo Tol.

  • Plasmium: Collected using the Needle Phial during the "Alchemist's Assistant" wish.
  • Plasmified Blood: A late-game item obtained during the "Advanced Alchemy" wish in Act 3.

17. Magnetite

Brittle rock that levitates naturally. It is central to the movement puzzles in the late game.

  • Location: Inspect the magnetite deposits in the Bright Vein on Mount Fay.

Enemy Drops and Boss Organs

These 11 entries are purely combat-focused. Most require players to defeat specific bosses or complete hunts to harvest unique biological components.

18. Pollip Heart

The core of a flower formed around a wood wasp.

  • Acquisition: Complete the "Rite of the Pollip" wish.

19. Rag Pelt

A fragile, drab pelt from a crawbug.

  • Acquisition: Defeat crawbugs in the Crawbug Clearing area of Bellhart.

20. Crown Fragment

A massive spike of bone taken from the Skull Tyrant.

  • Strategy Tip: The Skull Tyrant is a high-mobility boss. We recommend using tools with wide hitboxes to knock him out of the air before attempting to harvest the fragment.
  • Acquisition: Dropped upon the Skull Tyrant’s death during the "Terrible Tyrant" wish.

21. Broodmother's Eye

A gelatinous, shimmering organ.

  • Acquisition: Reward for slaying the Broodmother during the "Wailing Mother" wish in the Slab.

22. Seared, Shredded, and Skewered Organs

These entries are unique because they depend on how you kill the enemies during the "Brood Feast" wish.

  • Seared: Kill enemies using fire-type tool damage.
  • Shredded: Kill enemies using slashing-type tool damage.
  • Skewered: Kill enemies using piercing-type tool damage.

23. The Old Hearts (Nyle'th, Karmelita, Khann)

These are endgame boss rewards tied to the "Old Hearts" wish.

  • Pollen Heart: Defeat Nyle’th.
  • Hunter's Heart: Defeat Skarr Singer Karmelita.
  • Encrusted Heart: Defeat Crust King Khann.

The Relic Collection: Scrolls, Effigies, and Commands

Relics are the most exploration-heavy part of the Materium. They are often hidden behind complex platforming challenges or breakable walls.

Bone Scrolls (4 Entries)

Bone Scrolls contain the ancient history of Greymoor and the surrounding lands.

  1. Scroll 1: South-central Greymoor, located in a hidden room beneath a patch of destructible floor tiles.
  2. Scroll 2: East of the Seamstress in Far Fields. You’ll need to climb a series of high ledges to find a tucked-away nook.
  3. Scroll 3: Western Underworks. Behind a breakable wall near the primary transit elevator.
  4. Scroll 4: At the very peak of Wisp Thicket. This requires a master-level platforming sequence involving the silk-climb and dash mechanics.

Weaver Effigies (3 Entries)

These effigies are sacred to the Weaver tribe and are among the most beautiful items in the Materium.

  1. Effigy 1: Hidden high above the Bone Bottom central hub. Use the double-jump from the highest platform to reach a secret balcony.
  2. Effigy 2: Accessible only via the Chapel of the Witch. There is a long hallway to the east that leads to a shrine containing the effigy.
  3. Effigy 3: Southeastern tunnels beneath the Slab. It is guarded by several elite warrior bugs.

Choral Commandments (4 Entries)

The laws of the Citadel, written in song and stone.

  1. Commandment 1: On a high ledge on the east wall of Bone Bottom.
  2. Commandment 2: In the White Ward medical facility. Look for a surgery table in the northwestern wing.
  3. Commandment 3: The highest point of the White Ward. Best reached in Act 3 once you have unlocked the Silk Soar ability.
  4. Commandment 4: Purchase from the NPC Ju Bilana at the Song Clave after completing the "Lost Merchant" wish.

Rune Harps (3 Entries)

Musical instruments that resonate with the Soul of Pharloom.

  1. Harp 1: Northeastern Weavenest Alta, sitting on a high ledge.
  2. Harp 2: Below Weavenest C in the Cril tunnels. Look for a long passage that seems like a dead end.
  3. Harp 3: At the absolute southeastern end of the High Halls.

The Arcane Egg (1 Entry)

The rarest relic in the game. It is found in the Western Abyss in Act 3. Finding this requires surviving a grueling platforming section that tests every ability Hornet has acquired.

The Cylinder Collection

Cylinders are audio-visual recordings that provide lore context for the game's various regions.

Psalm Cylinders (5 Entries)

  1. High Halls: Found behind a breakable wall in the lower section of the halls.
  2. Underworks: In the northeastern sector near the White Ward boundary.
  3. Whispering Vaults: At the end of a hidden platforming challenge near the Lost Flea location.
  4. Blasted Steps: Purchase from the merchant Grindle once you have the double-jump.
  5. Citadel: Found in the private quarters of the Citadel guards.

Sacred Cylinder (1 Entry)

A unique cylinder that catalogs the most important religious hymns of Pharloom. Its location is often tied to the final Act’s main questline.

Mementos: Trophies of Achievement

Mementos are not "found" in the traditional sense; they are earned by completing the game's most difficult milestones.

  • Sprintmaster Memento: Earned by completing all four races in Act 3. These races are notoriously difficult and require a deep understanding of Hornet's momentum.
  • Guardian's Memento: Complete the questline for Seth, the Shrine Guardian.
  • Hero's Memento: Complete the "Hero's Call" wish, which involves defending multiple villages from raids.
  • Hunter's Memento: This requires you to fill the Hunter's Journal up to Act 3. It serves as a meta-reward for the Materium.
  • Grey Memento: Defeat the Watcher of the Edge, one of the game's premier optional bosses.
  • Surface Memento: Awarded when Hornet finally reaches the surface above Pharloom for the first time.
  • Craw Memento: Complete the "Craw Summons" quest and defeat the massive Crawfather boss.
  • Conjoined Memento: A late-game unlock that triggers after specific story progression regarding the nature of the Citadel's soul.

Strategic Tips for 100% Materium Completion

Filling all 91 slots is a marathon. Based on our extensive testing, here are the three most important things to keep in mind:

  1. Check the Courier NPCs Regularly: Tipp and Pill provide several quest-exclusive items like the Queen's Egg and Liquid Lacquer. If you ignore these two, you will find yourself stuck at 89/91 entries with no way to progress.
  2. The "Wish" Synergy: Many items, such as the Horn Fragment (dropped by Savage Beast Flies), only appear if the corresponding "Wish" is active on your board. If you kill the enemy without the quest, the item may not drop.
  3. The Double-Jump Gate: Do not attempt to complete the Materium until you have the Fay Down Cloak. Pharloom’s verticality is designed around this ability, and many relics are literally unreachable without it.

Summary of the Materium System

The Materium is more than a checklist; it is the physical manifestation of your progress through Silksong. By collecting all 91 entries—ranging from simple mossberries to the complex Arcane Egg—players gain a full understanding of Pharloom’s history, biology, and culture. The synergy between the Materium and the Desk in your Bellhome makes this the central hub for every secret you’ve uncovered.

FAQ

Where is the Materium located in Silksong?

The Materium is found in the upper levels of the Memorium region within the Citadel. You must platform past several electric hazards and possess the double-jump ability to reach its chamber.

How many items are in the Silksong Materium?

There are 91 entries in total, categorized into basics, flora, materials, enemy drops, relics, cylinders, and mementos.

Can I miss any Materium items?

Most items can be collected at any time, but certain quest rewards from Tipp and Pill or items tied to specific "Wishes" can be missed if the quest fails or if you progress too far into the final Act without completing them.

What is the benefit of completing the Materium?

While it primarily serves as a lore repository and a tracker for 100% completion, finishing the index often unlocks unique dialogue with NPCs like the Seamstress and provides a special achievement/trophy for Hornet’s Bellhome.

Do I need the Desk to see all Materium items?

Yes. The Materium and the Desk are separate furniture items. The Desk records relics and cylinders, while the Materium records materials and trophies. When both are installed in the Bellhome, they combine into a single interface.