Blood Gems - Secondary Stats

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page revision: 35, last edited: 08 Feb 2024

Table of Contents

Basic Information

Chalice dungeon gem effect pools consists of 2 parts, the “native” pool that is common and an “OOE” pool that is uncommon. The discovery of what these pools consists of for each chalice was done at the start of 2019 by the Tomb Prospectors with the help of datamined file analysis.

In each dungeon from each chalice it is possible to get a gem with any possible gem effect in the game, even though some of them might be extremely rare. The fact that a gem effect is technically in the native pool for a chalice does not have to mean that it is actually common, the same holds for gem effects in the OOE pool being uncommon. We can explain this better by showing the gem pools of the 3 most played chalices. Whenever a gem drops from an enemy, the non-fixed stats it will have depends on the gem pool for the given chalice it drops in.

Pthumeru depth 5	Loran depth 5	Isz depth 5

These gem pools are built from datamined info on how dungeons are coded, but the actual formula that calculated this is theory. Comparisons have been made with more than 20000 farmed gems and it proved to be very accurate. From these calculated pools we can see what the native and the OOE secondary gem effects are for the 3 main chalices.

You can clearly see that the Isz native secondary pool is varied with a lot of gem effects that have a very small chance of occuring, yet they are technically native to Isz due to how it is coded. This shows that native doesn’t necessarily mean that gem effects are actually that common. The missing secondary gem effects from the table below for each chalice are considered OOE - for example getting a gem from Pthumeru with Add Fire ATK secondary. OOE can therefore refer to primary (OOEp) but also secondary stats (OOEs).

For more information on how these gem pools are built exactly, you can visit the Tomb Prospector Research Sheet

Native Secondary Stats

Pthumeru
Add Physical ATK	Reduces stamina consumption	ATK vs open foes UP	Phys. UP at full HP
WPN durability UP	Charge ATKs UP	Phys. UP near death
Loran
Add Bolt ATK	Boosts rally potential	Add slow poison effect	ATK vs beasts UP
Add Fire ATK	Add rapid poison effect	HP continues to recover	ATK vs the kin UP
Isz
Add Physical ATK	Add Bolt ATK	WPN durability UP	ATK vs beasts UP	ATK UP near death
Add rapid poison effect	Add Fire ATK	HP continues to recover	ATK vs the kin UP	ATK UP at full HP
Add slow poison effect	Boosts rally potential	Reduces stamina consumption	Add Arcane ATK	Phys. UP at full HP
Most notable enemies with fixed secondary stats
Brainsuckers - Add Arcane ATK	Loran Clerics - Add Fire ATK	Evil Labyrinth Spirit - Phys. UP near death

Notes

Open Foes Effect: Open Foes effect activates only on counter hits which means hitting opponents during their attack animation and shortly after (during active frames and non-cancel-able recovery frames). [Testing Data]; [Research Video] Bloodborne PvE/PvP - How do the [Charge ATKs UP] & [ATK vs open foes UP] bonuses work?

Charge ATKs UP: For some unknown and probably unintended reason, elemental attack isn't affect by Charge ATKs UP bonus. Neither as primary (Striking) or secondary stat bonus. If weapon splits damage, only physical attack will be affected by Charge ATKs UP bonus. [Research Video] Bloodborne PvE/PvP - How do the [Charge ATKs UP] & [ATK vs open foes UP] bonuses work?

Boosts rally potential: The real value is always roughly 4x of the listed one. One +3% rally gem regains almost +12% hp per hit, Two +3% rally gems stack and regain +25% hp per hit, Two +3% rally gems and guidance +20% rune stack and regain +50% hp per hit. In other words and as a mere example, if you regain 100hp normally with a particular weapon and an attack, you will regain 150hp by adding two +3% rally 2nd stat gems and guidance 20% rune to that setup.

WPN durability UP: Numbers in these effects show how many more or less hits you will have to make till 1 durability is depleted. Example if your Blood Gem effect states WPN durability UP+2.8 it will take 13 hits to deplete 1 durability point against the enemy/object instead of default 10 without this effect. Maximum negative effect can be 1 durability point down for each hit.