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Eggfinity Stones

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Eggfinity Stones (often called Stones for short) are items in Egg, Inc. introduced in Version 1.20 alongside Artifacts and Ingredients. They are one possible reward from launching Spaceships. Fragments of these Stones can be obtained by consuming certain Artifacts, e.g. consuming Lunar Totems gives Lunar Stone Fragments to the player. These fragments will consume to uncapped piggy fill.

Certain Artifacts have sockets, and players can put Stones inside these sockets to enhance the effects of Artifacts. The first tier of each Stone is a Fragment. Stone Fragments cannot be placed inside sockets as they do not provide any bonuses. Stone Fragments must be used in the Hall of Artifacts in order to craft higher tier Stones.

The cost of setting a stone follows this formula:

Both crafting prices are base, unaffected by events. The host Artifact's tier also affects its 'crafting cost', visible under the table at the bottom of the Artifact explorer tool on the right side.

One example is the T3E Demeter's Necklace, which has a base crafting price of 39367.55. Because a T2 Soul Stone's base crafting price is 5196.19, the cost of setting it inside the Demeter's Necklace becomes 2487. Another example is the T4L Phoenix Feather: with a base price of 1720176.75, and with the base price of a T4 Prophecy Stone at 731674.39, the cost to slot it into that artifact is 159176.2765.

Stone Crafting[]

Main article: Crafting

Stone fragments will add uncapped fill to the Piggy Bank. Tier 2 and higher stones can be consumed for Golden Eggs, and you can generally craft a stone of a higher tier with enough stones of the lower tier, plus some Golden Eggs. If you craft enough to get their Golden Egg costs down, the following three stones will run you a Golden Egg profit when you craft the T1s into T2, then consume the T2: Lunar, Shell, Tachyon. No other stone (or artifact) exhibits this behaviour, even after 300 crafts (which reduces the crafting cost to the lowest it will ever be).

Types of Stones[]

Clarity Stone[]

Clarity Stones enable the effect of the host Artifact to work on the Enlightenment Egg. Because you can use Eggceptional Clarity Stones to get an artifact up to 300% (x3) effectiveness, even after you get the Enlightenment Diamond, these are very useful on Medallions and Brooches to farm Golden Eggs on an Enlightenment Farm.

Icon Name Increase Consumed Craft XP Per Craft Quality Odds Multiplier
Clarity Stone Fragment N/A Piggy Bank Addition137 N/A N/A 6 1.06
Clarity Stone 25% of host effect Golden Egg}}495 Clarity Stone Fragment}}20 Clarity Stone Fragments 21,893 8 0.07
Eggsquisite Clarity Stone 50% of host effect Golden Egg}}1,045 }}10 Clarity Stones (Clarity Stone Fragment}}200)
Prophecy Stone (T2)}}2 Prophecy Stones(Prophecy Stone Fragment (T1)}}40) 		191,437 12.2 0.05
Eggceptional Clarity Stone 100% of host effect Golden Egg}}1,912 Eggsquisite Clarity Stone}}20 Eggsquisite Clarity Stones (Clarity Stone Fragment}}4,000)
Radiant Prophecy Stone (T4)}}2 Radiant Prophecy Stones (Prophecy Stone Fragment (T1)}}4,800) 		1,281,227 17.5 0.02

Dilithium Stone[]

Dilithium Stones increase boost duration. When a boost is consumed, all Dilithium Stones impact its duration, and then the stones are never checked again; this means you should make yourself a "Dilithium Set" of artifacts with as many slots as possible devoted to Dilithium Stones, without caring about what the artifacts actually do. This will let you equip the Dilithium Set, use boosts, and then swap to a set of relevant artifacts, keeping the duration buff from the Dilithium Stones.

Icon Name Increase Consumed Craft XP Per Craft Quality Odds Multiplier
Dilithium Stone Fragment N/A Piggy Bank Addition62 N/A N/A 4.1 1.06
Dilithium Stone +3% Golden Egg}}386 Dilithium Stone Fragment}}20 Dilithium Stone Fragments 9,893 7 0.1
Eggsquisite Dilithium Stone +6% Golden Egg}}773 }}12 Dilithium Stones (Dilithium Stone Fragment}}240) 68,138 10.25 0.1
Brilliant Dilithium Stone +8% Golden Egg}}1,796 Eggsquisite Dilithium Stone}}15 Eggsquisite Dilithium Stones (Dilithium Stone Fragment}}3,600) 722,988 16.85 0.1

Life Stone[]

Life Stones improve the Internal Hatchery rate. Aside from being the best stone to add to your Chalice, if you have enough stones and artifacts, a Monocle loaded with these is an ideal second artifact when using tachyon prisms.

Icon Name Increase Consumed Craft XP Per Craft Quality Odds Multiplier
Life Stone Fragment N/A Piggy Bank Addition69 N/A N/A 4.3 1.06
Life Stone +2% Golden Egg}}286 Life Stone Fragment}}20 Life Stone Fragments 4,326 6 0.1
Good Life Stone +3% Golden Egg}}678 }}12 Life Stones (Life Stone Fragment}}240) 47,364 9.52 0.1
Eggceptional Life Stone +4% Golden Egg}}1,514 Good Life Stone}}15 Good Life Stones (Life Stone Fragment}}3,600) 447,455 15.2 0.1

Lunar Stone[]

Lunar Stones increase away earnings. This has no known use-case; the only context in which you might care about away earnings is on Enlightenment, where you can't use boosts anyway, but in that context you'd be better off with Clarity Stones. In general, the best use of Lunar Stones is as Golden Egg income, especially once you have crafted enough T2 stones to run an egg profit off of the T1s.

Icon Name Increase Consumed Craft XP Per Craft Quality Odds Multiplier
Lunar Stone Fragment N/A Piggy Bank Addition7 N/A N/A 1.9 1.59
Lunar Stone +20% Golden Egg}}67 Lunar Stone Fragment}}20 Lunar Stone Fragments 159 3.5 0.1
Eggsquisite Lunar Stone +30% Golden Egg}}310 }}20 Lunar Stones (Lunar Stone Fragment}}400) 11,890 7.25 0.1
Meggnificent Lunar Stone +40% Golden Egg}}1,052 Eggsquisite Lunar Stone}}25 Eggsquisite Lunar Stones (Lunar Stone Fragment}}10,000) 234,442 13.25 0.1

Prophecy Stone[]

Prophecy Stones increase the Egg of Prophecy bonus.

Icon Name Increase Consumed Craft XP Per Craft Quality Odds Multiplier
Prophecy Stone Fragment N/A Piggy Bank Addition146 N/A N/A 6.2 1.06
Prophecy Stone +0.05% Golden Egg}}553 Prophecy Stone Fragment (T1)}}20 Prophecy Stone Fragments 32,523 8.5 0.05
Eggsquisite Prophecy Stone +0.10% Golden Egg}}1,134 Prophecy Stone (T2)}}10 Prophecy Stones (Prophecy Stone Fragment (T1)}}200) 271,491 12.8 0.03
Radiant Prophecy Stone +0.15% Golden Egg}}1,858 Eggsquisite Prophecy Stone (T3)}}12 Eggsquisite Prophecy Stones (Prophecy Stone Fragment (T1)}}2,400)
Radiant Soul Stone (T4)}}2 Radiant Soul Stones (Soul Stone Fragment (T1)}}12,000) 		1,182,751 17.2 0.02

Quantum Stone[]

Quantum Stones increase shipping capacity.

Icon Name Increase Consumed Craft XP Per Craft Quality Odds Multiplier
Quantum Stone Fragment N/A Piggy Bank Addition52 N/A N/A 3.8 1.06
Quantum Stone +2% Golden Egg}}241 Quantum Stone Fragment}}20 Quantum Stone Fragments 2,668 5.8 0.1
Phased Quantum Stone +4% Golden Egg}}434 }}15 Quantum Stones (Quantum Stone Fragment}}300) 13,697 7.45 0.1
Meggnificent Quantum Stone +5% Golden Egg}}1,272 Phased Quantum Stone}} 20 Phased Quantum Stones (Quantum Stone Fragment}}6,000) 274,584 13.7 0.1

Shell Stone[]

Shell Stones increase egg value.

Icon Name Increase Consumed Craft XP Per Craft Quality Odds Multiplier
Shell Stone Fragment N/A Piggy Bank Addition8 N/A N/A 2 1.06
Shell Stone +5% Golden Egg}}57 Shell Stone Fragment}}20 Shell Stone Fragments 43 2.95 0.1
Eggsquisite Shell Stone +8% Golden Egg}}370 }}20 Shell Stones (Shell Stone Fragment}}400) 8,825 6.85 0.1
Flawless Shell Stone +10% Golden Egg}}1,142 Eggsquisite Shell Stone}}10 Eggsquisite Shell Stones (Shell Stone Fragment}}4,000)
Eggsquisite Dilithium Stone}}5 Eggsquisite Dilithium Stones (Dilithium Stone Fragment}}1,200) 		202,685 12.85 0.1

Soul Stone[]

Soul Stones increase Soul Egg bonus.

Icon Name Increase Consumed Craft XP Per Craft Quality Odds Multiplier
Soul Stone Fragment N/A Piggy Bank Addition56 N/A N/A 3.9 1.06
Soul Stone +5% Golden Egg}}206 Soul Stone Fragment (T1)}}20 Soul Stone Fragments 1,773 5.1 0.1
Eggsquisite Soul Stone +10% Golden Egg}}626 Soul Stone (T2)}}15 Soul Stones (Soul Stone Fragment (T1)}}300) 45,795 9.1 0.05
Radiant Soul Stone +25% Golden Egg}}1,179 Eggsquisite Soul Stone (T3)}}20 Eggsquisite Soul Stones (Soul Stone Fragment (T1)}}6,000) 283,741 13.1 0.04

Tachyon Stone[]

Tachyon Stones increase egg laying rate. They belong on your Metronome and Deflector, and may be useful on your Compass and Gusset. Higher level players also slot these into spare 3 slot legendary artifacts in order to increase their contract performance.

Icon Name Increase Consumed Craft XP Per Craft Quality Odds Multiplier
Tachyon Stone Fragment N/A Piggy Bank Addition29 N/A N/A 3 1.06
Tachyon Stone +2% Golden Egg}}73 }}20 Tachyon Stone Fragments 93 3.25 0.1
Eggsquisite Tachyon Stone +4% Golden Egg}}370 }}15 Tachyon Stones (}}300) 8,825 6.85 0.1
Brilliant Tachyon Stone +5% Golden Egg}}1,296 }}20 Eggsquisite Tachyon Stones (}}6,000) 289,070 13.85 0.1

Terra Stone[]

Terra Stones increase max running chicken bonus.

Icon Name Increase Consumed Craft XP Per Craft Quality Odds Multiplier
Terra Stone Fragment N/A Piggy Bank Addition66 N/A N/A 4.2 1.06
Terra Stone +10 Golden Egg}}206 }}20 Terra Stone Fragments 1,733 5.1 0.1
Rich Terra Stone +50 Golden Egg}}473 }}15 Terra Stones (}}300) 17,357 7.8 0.1
Eggceptional Terra Stone +100 Golden Egg}}1,465 Rich Terra Stone}}20 Rich Terra Stones (}}6,000) 407,589 14.9 0.1

Effect Stacking[]

The following stones stack multiplicatively with themselves (and other Artifact effects). For example, one Eggsquisite Shell Stone gives +8% egg value, and using two would give +16.64% egg value. For example:

  • Dilithium Stone
  • Life Stone
  • Lunar Stone
  • Quantum Stone
  • Shell Stone
  • Tachyon Stone

The following stones stack additively. For example, one Eggsquisite Soul Stone gives +10 percentage points to your Soul Egg bonus, and using two would give +20.

  • Clarity Stone
  • Soul Stone
  • Terra Stone

The effect of multiple Prophecy Stones is more nuanced. The bonuses from Prophecy Stones are added together (along with any bonus from the Book of Basan and the Prophecy Bonus epic research). This bonus then contributes to the compounding effect of Eggs of Prophecy, meaning each additional Prophecy Stone has a greater effect on the total Earning Bonus than the previous one.

Comparing Earning Stones[]

So that you can easily tell which stones you should slot to earn the most bocks, here are how the various stones compare when stacked:

  • Shell Stone: Percentage as listed.
  • Tachyon Stone: Percentage as listed.
  • Soul Stone: Does not work with Soul Mirror. Assuming you've maxed out Soul Food, all of your soul stones added together divided by 1.5 is your net percent, meaning you get diminishing returns (and T2 and T3 stones are fundamentally worthless - just use shell stones); as an example, here is the converted equivalent of the given number of T4 soul stones to a percentage, stopping when a T4 shell stone would be better. Remember, outside of the Enlightenment Egg, it doesn't matter which artifact holds which stone. Each percentage is the effect of that stone - for example, number 2 shows you the benefit of adding a second stone on top of one already equipped.
    1. +16.67%
    2. +14.29%
    3. +12.5%
    4. +11.11%
    5. +10%, DO NOT USE
  • Terra Stone: Has diminishing returns which diminish faster if you have a Vial of Martian Dust equipped, because the higher your RCB, the less the benefit of adding the same number to it. Likewise, if you haven't completed all of your relevant Common Research and Epic Research yet, this stone is better, because your starting number is lower. Assuming a base number of 540 (all research maxed out) and no vial, your first T2 terra stone is worth about +1.85% and your first T3 terra stone is worth about 9.26%. T4 terra stones can outperform shell stones, so here is the converted equivalent of the given number of T4 terra stones without a vial equipped (by the time you care about this question you should have a T4C Prime Vial of Martian Dust at a minimum, and equipping that makes even your first T4 terra stone a mistake) to a percentage, stopping when a T4 shell stone would be better. Remember, outside of the Enlightenment Egg, it doesn't matter which artifact holds which stone. Each percentage is the effect of that stone - for example, number 2 shows you the benefit of adding a second stone on top of one already equipped.
    1. +18.52%
    2. +15.62%
    3. +13.51%
    4. +11.9%
    5. +10.64%
    6. +9.62%, DO NOT USE
  • Soul + Terra: Using the same assumptions as above, including no vial equipped, here is the optimal equipping order of T4 Soul and Terra stones:
    1. Terra (18.52)
    2. Soul (16.67)
    3. Terra (15.62)
    4. Soul (14.29)
    5. Terra (13.51)
    6. Soul (12.5)
    7. Soul (11.11)
    8. Terra (11.9)
    9. Terra (10.64)
    10. T4 Shell Stones are better.

Trivia[]

  • It costs Golden Eggs to add a Stone to an Artifact, but it is free to remove the Stone from the Artifact. However, you will have to pay the cost of adding the Stone to the Artifact again if you want to put it back on the Artifact.
  • The effect of Clarity Stones add to each other, so 2 Clarity Stones allow the host artifact to have a 50% effect on the Enlightenment Egg. Even if there is more than one Eggceptional Clarity Stone, the effects will still add to each other; for example, a Legendary Tier 4 Gusset with 3 Eggceptional Clarity stones will have +300% effectiveness, or +75% hab space.
  • Warning: The game will let you equip Eggfinity Stones onto an Artifact without a confirmation dialogue; this can result in wasting tens of thousands of Golden Eggs due to simply pressing on the wrong part of the screen.
  • "Eggfinity Stones" are a parody of "Infinity Stones" - powerful gems with different abilities from the Marvel Universe.
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