Mortal Shell 2: Break Glimpse Stones & Farm Specimens

Updated 15 November 2026 · Standard formula, shown below

To break Glimpse Stones in Mortal Shell 2 and farm Extracted Specimens, you need to use the Grindstone at Fallgrim Tower—approach it, select a Glimpse Stone from your inventory, and interact to shatter it, which converts the stone into a random Extracted Specimen. This guide explains the exact mechanic, how to choose which stones to break, where to farm them efficiently, and answers common questions about the system.

What Are Glimpse Stones and Extracted Specimens?

Glimpse Stones are consumable items in Mortal Shell 2 that store “Glimpses”—the game’s currency for unlocking abilities and upgrading your character. When you defeat enemies or explore the world, you accumulate Glimpses, and Glimpse Stones act as portable banks for that currency. Extracted Specimens, on the other hand, are crafting materials used to upgrade your weapons and armor at the Grindstone. Each Specimen type corresponds to a specific upgrade tier, and you need them to enhance your gear beyond its base level.

The key relationship: breaking a Glimpse Stone at the Grindstone does not give you Glimpses—it gives you a random Extracted Specimen. This is a deliberate trade-off: you sacrifice the stored Glimpses (which you could spend on abilities) for a chance to get a crafting material that might be rarer or more useful for your immediate upgrade goals. The game does not explain this clearly, so many players accidentally break stones expecting Glimpses and end up with Specimens they didn’t want.

How to Break Glimpse Stones Step-by-Step

Travel to Fallgrim Tower—the central hub area where the Grindstone is located. You can fast-travel there from any Sester’s shrine.
Locate the Grindstone: it’s the large, circular stone table near the center of the tower, surrounded by candles and tools.
Interact with the Grindstone (press the interact button, usually E on PC or X on console) to open the crafting menu.
In the menu, select the “Break Glimpse Stone” option. This is a separate tab from weapon upgrades.
Choose a Glimpse Stone from your inventory. You can select any stone you have, regardless of its stored Glimpse count.
Confirm the break. The stone shatters, and you receive one random Extracted Specimen.

Important: The Specimen you receive is random, but the rarity of the Specimen is influenced by the tier of the Glimpse Stone. For example, a Glimpse Stone that holds 100 Glimpses might yield a higher-tier Specimen than one holding 50. However, the exact drop rates are not published by the developers, so it’s a gamble.

How to Choose Which Glimpse Stones to Break

Not all Glimpse Stones are equal, and breaking the wrong ones can set you back. Here are the factors to consider:

Glimpse value vs. Specimen need: If you’re close to unlocking a new ability (which costs Glimpses), breaking a stone with a high Glimpse count is wasteful. Only break stones when you have spare Glimpses or when you desperately need a Specimen.
Stone tier: Higher-tier stones (those that hold more Glimpses) tend to drop better Specimens. If you have a mix, break the lower-tier ones first to test your luck, and save the high-tier ones for when you need a specific rare Specimen.
Current upgrade needs: Check what Specimens you need for your next weapon upgrade. If you need a “Fused” Specimen, and you have a Glimpse Stone that seems to drop it more often (based on community reports, though not confirmed), prioritize that stone.
Don’t break all: Keep at least one Glimpse Stone in reserve. Some quests or NPCs might ask for one, and you don’t want to be caught without.

Farming Extracted Specimens Efficiently

Breaking Glimpse Stones is the primary way to get Extracted Specimens, but you can also farm them from enemies and chests. Here’s a breakdown of the most reliable methods:

Enemy drops: Certain enemies, especially elite enemies and bosses, have a chance to drop Extracted Specimens. The drop rate is low, but farming a specific enemy that spawns near a Sester’s shrine (checkpoint) can be efficient. For example, the Grisha in Fallgrim can drop Specimens, but they’re tough.
Chests and loot: Many chests scattered around the world contain Extracted Specimens. These respawn if you die and revisit the area, but not if you rest at a shrine. So, if you find a chest with a Specimen, grab it, then die or use a Martyr’s Seal to reset the area and loot it again.
Glimpse Stone farming: To break more stones, you need to find them. Glimpse Stones drop from enemies and are found in chests. The best farming spots are areas with dense enemy groups, like the Crypt of Martyrs or the Seat of Infinity. Kill enemies, collect stones, then break them at the Grindstone.
Trade with Sester: Some Sesters (the NPCs that act as checkpoints) offer a trade: you can give them Glimpses to buy Glimpse Stones. This is a direct conversion, but it’s expensive—usually 100 Glimpses per stone. If you have excess Glimpses, this is a reliable way to get more stones to break.

Rarity Tiers and Drop Rates

Extracted Specimens come in several tiers, each needed for different upgrade levels. The common tiers are: Fused, Frozen, Molten, and Eternal. The higher the tier, the rarer the Specimen and the more valuable it is for late-game upgrades. Drop rates are not officially published, but players have observed that:

Basic enemies drop low-tier Specimens (Fused) rarely.
Elite enemies and mini-bosses drop mid-tier Specimens (Frozen, Molten) more often.
Bosses and high-tier Glimpse Stones drop the rarest Specimens (Eternal).
Breaking a Glimpse Stone seems to have a higher chance of dropping a Specimen that matches the stone’s tier, but it’s not guaranteed.

Because of this randomness, it’s often better to farm Glimpse Stones and break them than to grind specific enemies for a Specimen you need. The stone method gives you a chance at any tier, while enemy farming is more limited.

Common Mistakes and Misconceptions

Players often make these errors when dealing with Glimpse Stones:

Breaking stones for Glimpses: As mentioned, breaking a stone does NOT give you Glimpses. It gives you a Specimen. If you need Glimpses, you must use the stone from your inventory (not at the Grindstone) to absorb the Glimpses.
Breaking all stones at once: If you break all your stones and get a Specimen you don’t need, you’ve wasted potential Glimpses. Always keep a few stones in reserve.
Not checking the Grindstone menu: Some players think the Grindstone only upgrades weapons. The “Break Glimpse Stone” option is a separate tab, so look for it.
Assuming Specimens are account-wide: Extracted Specimens are character-specific. If you start a new game, you start with zero Specimens. Plan your upgrades accordingly.

Alternatives to Breaking Glimpse Stones

If you don’t want to gamble on breaking stones, there are alternative ways to get Extracted Specimens:

Purchase from Sester: Some Sesters sell specific Specimens for a high price in Glimpses. This is a guaranteed trade, but it’s expensive and only available for certain tiers.
Loot from fixed locations: Some Specimens are found in set locations in the world, like behind hidden walls or in locked chests. These are one-time pickups, but they guarantee a specific tier.
Trade with other players: In multiplayer (if you have the DLC), you can trade Specimens with other players. This is the only way to get a specific Specimen without relying on RNG.

Each method has its pros and cons: breaking stones is fast but random, farming enemies is time-consuming but can yield multiple Specimens, and purchasing is reliable but expensive. Choose based on your current needs and resources.

Frequently Asked Questions

Can I get Glimpses from breaking a Glimpse Stone?

No. Breaking a Glimpse Stone at the Grindstone always yields an Extracted Specimen, never Glimpses. To get the Glimpses stored in a stone, you must use it from your inventory (not at the Grindstone). The game doesn’t warn you about this, so it’s a common mistake.

What is the best way to farm Eternal Specimens?

Eternal Specimens are the rarest tier. The most reliable method is to break high-tier Glimpse Stones (those that hold 200+ Glimpses). You can farm these stones from bosses and elite enemies in the late-game areas like the Seat of Infinity. Alternatively, you can trade with Sesters, but they only sell up to Molten tier, so you’ll have to rely on RNG for Eternal.

Do Glimpse Stones carry over to New Game+?

Yes, Glimpse Stones and Extracted Specimens carry over to New Game+ if you start a new cycle. However, your character’s upgrades do not reset, so you’ll have a head start. This is a good way to accumulate Specimens for late-game upgrades.

Is it better to break stones or use them for Glimpses?

It depends on your progression. Early in the game, you need Glimpses to unlock abilities, so use stones for Glimpses. Later, when you have most abilities, breaking stones for Specimens is more valuable because weapon upgrades become the bottleneck. There’s no one-size-fits-all answer, so assess your current needs.

Can I get Extracted Specimens from normal enemies?

Yes, but the drop rate is very low—roughly 1-2% for basic enemies. Elite enemies have a higher chance (around 5-10%), and bosses always drop at least one Specimen. If you’re farming, focus on elites and bosses, not regular mobs.

Method: the standard formula for this calculation, rounded as each result states. See how the calculators work or report an error.