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Bloodborne Guide: How to Farm/Acquire The Best Blood Gems in the Game

The following dungeons utilize first boss farming. To be considered a good farming spot, the boss needs to be fairly easy, give high tier gems and the lever to open the boss doors should most often be close to the lamp-- Thus making it very ideal for farming. The gems are all cursed, and can have any of the following negative effects:
  • WPN Durability Down - between (-58.5-63)
  • ATK DOWN - between (8.2-8.8%)
  • Increases stamina costs between (2.8-3.5)
  • ATK vs Beasts Down between (-5.5-12%)
  • ATK vs the Kin Down -between (-5.5-12%)
  • HP continues to decrease -between (1-9)

I will only be posting gems that have dropped for me. If I dont list a tier 20 gem on a certain boss, then it doesn't necessarily mean it doesn't drop. In fact, it probably does, but at an extremely low rate. Also, I wont be posting the negative effects of each gem, since every cursed gem can have any of the above stated negative effects.

FOR PHYSICAL+% (OR FIRE) WITH ARCANE ADD SECONDARY (Triangle shape, but very rarely drops radial)

Check out this dungeon and farm first boss: huy83p9r (By SleepAttack)

Location: Isz Root.

Rites: Cursed, Foetid, Rotten.

The first boss in this one is the Brainsucker. Approach with care, dodge attack and go in and spam until your stamina is used up, then back off and repeat.

The following drops from this boss:

Cursed Tempering Damp Blood Gem (6) ((With Arcane ADD)
Rating 17: * Main effect: Physical ATK up 9.1% * Secondary: ADD Arcane ATK +67,5-72.5
Rating 18: * Main effect: Physical ATK up 9.5% * Secondary: ADD Arcane ATK+67,5-72.5
Rating 19: * Main effect: Physical ATK up 9.8% * Secondary: ADD Arcane ATK+67,5-72.5

Cursed FIRE Damp Blood Gem (6) ((With Arcane ADD)
Rating 17: * Main effect: FIRE ATK up 9.1% * Secondary: ADD Arcane ATK+67,5-72.5
Rating 18: * Main effect: FIRE ATK up 9.5% * Secondary: ADD Arcane ATK+67,5-72.5
Rating 19: * Main effect: FIRE ATK up 9.8% * Secondary: ADD Arcane ATK+67,5-72.5

With the case of these gems. The highest rating is not necessarily the best gem for your particular weapon. If the weapons base dmg is mediocre, you might get more out of rating 17 gem. Or if the gems are equal, just use the one with the less bad negative effects.

FOR ARCANE UP+% AND TRIANGLE PHYSICAL GEMS

Check out this dungeon and farm first boss: 5pwujscd (By VictoolF91).

Location: Isz Root.

Rites: Cursed, Foetid, Rotten.

The first boss in this one are the Watchers. They are fairly easy. Just parry the first 2, and kill the 3rd one with charge attacks. The following drops from this boss:

Cursed Arcane Damp Blood Gem (6) Stats: (These doesn't drop too often, but when they do, thank RNGjesus and equip them).
  • Rating 17: Arcane ATK up 25.3%
  • Rating 18: Arcane ATK up 26.3%
  • Rating 19: Arcane ATK up 27.2%

Cursed Tempering Damp Blood Gem (6) (Triangle) Stats:
  • Rating 17: Physical ATK up 25.3%
  • Rating 18: Physical ATK up 26.3%
  • Rating 19: Physical ATK up 27.2%

Cursed Fool's Damp Blood Gem (6) (Triangle) Stats:
  • Rating 19:
  • Main effect: ATK UP at full hp 29%
  • 1 of these Secondary effects : HP gradually depletes-9

Cursed Fire Damp Blood Gem (6) (Note: these gems are a rare drop from the Watchers. You are more likely to find them in lower loran root):
  • Rating 17: Fire ATK up 25.3%
  • Rating 18: Fire ATK up 26.3%
  • Rating 19: Fire ATK up 27.2%

Cursed Adept Damp Blood Gem (6)
  • Rating 19:
  • Main effect: Blunt ATK UP+32.6%

FOR RADIAL PHYSICAL ATK UP+% AND FIRE GEMS

Check out this dungeon and farm first boss: pwmf22gu (by Lionhard70).

Location: Great Phtumeru Ihyll Root.

Rites: Cursed, Foetid, Rotten.

The first boss are Watchers. Very easy boss, especially if you cheese it.

The following drops from this boss:

Cursed Tempering Damp Blood Gem (6) (Radial) Stats:
  • Rating 17: Physical ATK up 25.3%
  • Rating 18: Physical ATK up 26.3%
  • Rating 19: Physical ATK up 27.2%

These gems can also drop:

Cursed Fire Damp Blood Gem (6) (Note: these gems are a rare drop from the Watchers. You are more likely to find them in lower loran root):
  • Rating 17: Fire ATK up 25.3%
  • Rating 18: Fire ATK up 26.3%
  • Rating 19: Fire ATK up 27.2%

Cursed Poorman´s Damp Blood Gem (6) (Very rare drop from watchers)
  • Rating 19: Physical UP near death +36.3%

FOR FIRE AND BOLT ATK UP+% AND RAPID POISON GEMS WITH SECONDARY AND WANING PHYSICAL GEMS

Check out this dungeon and farm first boss: enjids45 (by in-KASUGA-po).

Location: Lower Loran Root.

Rites: Cursed, Foetid, Rotten.

The first boss is a Loran Silverbeast. Equip a couple Clawmark runes, and visceral attack him. You will one shot him, since he is weak to visceral attacks. Very weak. Extremely easy and useful to farm.

The following Waning gems drops from this boss:

Cursed Fire Damp Blood Gem (6) Stats:
  • Rating 17:
  • Main effect: Fire ATK UP+22.3%
  • 1 of these Secondary effects : Add bolt ATK +13.5 / Add Fire ATK +13.5
  • Rating 18:
  • Main effect: Fire ATK UP+23.1%
  • 1 of these Secondary effects : Add bolt ATK +13.5-14 / Add fire ATK +13.5-14
  • Rating 19:
  • Main effect: Fire ATK UP+23.9%
  • 1 of these Secondary effects : Add bolt ATK +14 / Add fire ATK +14 / Add Rapid Poison Effect +3.3

Cursed Bolt Damp Blood Gem (6) Stats:
  • Rating 17:
  • Main effect: Bolt ATK UP+22.3%
  • 1 of these Secondary effects: Add bolt ATK +13.5 / Add fire ATK +13.5 / HP continues to recover +1
  • Rating 18:
  • Main effect: Bolt ATK UP+23.1%
  • 1 of these Secondary effects: Add bolt ATK +13.5-14 / Add fire ATK +13.5-14 / HP continues to recover +1-2
  • Rating 19:
  • Main effect: Bolt ATK UP+23.9%
  • 1 of these Secondary effects: Add bolt ATK +14 / Add fire ATK +14 / HP continues to recover +1-3

These gems can also drop, and are slightly more rare than bolt and fire:

Cursed Dirty Damp Blood Gem (6) Stats:
  • Rating 17:
  • Main effect: Add rapid poison effect+17.8 (or sometimes rarely: Add slow poison +14.8)
  • 1 of these secondary effects: Hp continues to recover +1 / boosts rally potential +2.9%
  • Rating 18:
  • Main effect: Add rapid poison effect +18.4 (or sometimes rarely: Add slow poison +15.4)
  • 1 of these secondary effects: Hp continues to recover +1-2 / add slow poison effect +2.9 / ATK VS beasts up 5%
  • Rating 19: This hasn't dropped for me yet, but I guess you can infer the stats of what it will be, based on the other ones.

Cursed Tempering Damp Blood Gem (6) (Waning) Stats:
  • Rating 17:
  • Main effect: Physical ATK up 22.3%
  • 1 of these secondary effects: Add slow poison effect +2.7%
  • Rating 18:
  • Main effect: Physical ATK up 23.1&
  • 1 of these secondary effects: Add fire ATK +13.5-14
  • Rating 19: This hasn't dropped either.

FOR PHYSICAL UP+% GEMS WITH SECONDARY

Check out this dungeon and farm first boss: diryie74 (By Pontaro-_-).

Location: Great Phtumeru Ihyll Root.

Rites: Cursed, Foetid, Rotten.

The first boss in this one Phtumerian Elder. The guy is fairly easy to parry, and with Clawmark rune, you can do some pretty good dmg. Shouldn't have too much trouble with this guy.

The following drops from this boss:

Cursed Tempering Damp Blood Gem (6) Stats:
  • Rating 19:
  • Main effect: Physical atk up 21.8%
  • Secondary effect: Add Physical ATK +8.4

Cursed Tempering Abyssal Blood gem (6) (extremely rare) Stats:
  • Rating 20:
  • Main effect: Physical atk up 22.5%
  • Secondary effect: Atk vs open foes up 5.6%

Haven't farmed this one so much, but you get the idea of what sort of gems drop.

List is not finished, and if people want to contribute to this list, then I wouldn't mind editing this post. Need the following info on bosses to farm these types of gems (only high tier):
  • Circle gems
  • Droplet gems
  • Arcane add+ (as main stat)
  • Physical add+ (as main stat)
  • Physical ATK UP+ and Arcane add+ as secondary Found what boss you can farm this from, updating this post soon.
  • Arcane ATK UP+ and Physical add+ as secondary

These last 2 gem types are very useful for weapons that can scale off both elementals and physical (such as BoM or Burial Blade for instance). So if anyone got a consistent way of farming high tier versions of these gems from a boss, let me know. I haven't had too much time trying to farm all kinds of bosses to see what they drop, so I would appreciate some help from community to contribute.

Useful tips and info:
  • Radial Gems drop from Phtumeru dungeons, Triangular Gems drop from Isz dungeons and Waning Gems drop from Loran dungeons. The best gems comes from depth 5.
  • Most top tier gems are cursed gems, with minor negatives. So its best to farm chalice dungeons with all rite offerings. You only need to make a depth 5 dungeon once with either foetid or rotted and a cursed offering to be able to unlock all depth 5 dungeons with those offerings. This essentially means you only need to make the dungeon once using your own materials, and when you want to farm, just search someone else's.
  • I am not 100% sure on this, but I believe this is what rite offerings do:
  • Foetid offering adds more traps and poison pools (and possibly stronger enemies), but better chances of getting runes and weapons. (not completely sure here).
  • Rotted offering will make some enemies stronger, and you can notice this by seeing a red aura around them. These buffed mobs will drop better gems. Cursed offering halves your hp and makes enemies drop the cursed gems.
  • If you pvp, I advise you run cursed gems with the atk vs beasts down and atk vs the kin down negative effects, as they will not affect you at all. If you want cursed gems that are both good for pvp and pve, I would recommend farming for the cursed gems with the ”increases stamina costs” negatives. They are rarer to find though. The most common ones are WPN durability down and atk down. If you get a cursed gem with atk down on it, its basically useless.
  • The reason why you farm the bosses instead of normal mobs is because the bosses always drops the same quality gems. What is gem quality? Well, a Cursed Tempering Blood Gemstone (6) with rating 19 from a normal watcher mob for example, cant give you more than 22-23% physical atk up. While the same gem with the same rating and same rarity (6) will give you 27% physical atk up. Additionaly, the bosses from depth 5 root chalice dungeons (with offerings) will always give rarity (6) gems. While the mob versions drop rarity (5) gems and rarely (6), and if they do, you have to prey at the altar of despair for good RNG on the rating.
  • Additionally, from what I can gather, the tier of the gem is based on the difficulty of the boss. In depth 5 root chalice dungeons with all offerings, some bosses will almost always drop tier 19 gems and very rarely 20. While the Watchers boss for example will most commonly drop a tier 17 with tier 18 and 19 being less common. The final boss of said dungeons has a high chance of dropping a tier 20 abyssal gem
Credits: This guide was made by nagamasaarai