Editing Gemheart

{{item
|image=Gemheart by Kelley Harris.jpg
|world=Roshar
|universe=[[Cosmere]]
|books=[[The Stormlight Archive]]
}}
{{update|sa3|sa4}}
A '''gemheart''' is a gemstone found in many native animal species on [[Roshar]], including the sapient species called [[singer]]s.

== Origin and Purpose ==
Gemhearts form naturally within some of Roshar's organisms. The [[crem]] that falls with Rosharan rains is full of minerals, which the creatures absorb by drinking and then use to grow the gemheart.{{wob ref|13335}} Their formation is also influenced by [[Investiture]] leaking into the anatomy of certain Rosharan species, creating an effect similar to the formation of [[atium]] on [[Scadrial]].{{wob ref|4678}} Creatures with gemhearts still have normal hearts.{{wob ref|15302}}

Like any gemstone that is one of the ten [[Polestone]]s, gemhearts can glow with either [[Stormlight]] or [[Voidlight]], suggesting that an animal's gemheart is the thing that enables the types of Investiture that many such animals utilize, usually involving a [[spren]] bond. A singer's gemheart, for example, contains the spren that gives them their current [[Singer#Forms|form]], which varies depending on the type of spren they bond.{{book ref|sa3|i|6}}

Humans on Roshar, even [[Surgebinder]]s with spren bonds, do not have gemhearts,{{wob ref|2685}} but those who swallow [[Yelig-nar]] have been known to undergo several physical transformations, including having their heart and lungs replaced with a large Voidlight-filled amethyst that has been described as a "gemstone heart".{{book ref|sa3|120}} It is uncertain whether this can be considered a gemheart or not, but its nature is similar in that it is a gemstone created through Investiture and it functions as a vital part of the transformed human, who would not survive if it is destroyed.

== Size ==
In general, the bigger the animal, the bigger the gemheart. Those found in chasmfiends were worth a small fortune.{{book ref|twok|13}} [[Chasmfiend]]s and other large [[chull|chull-like]] animals called greatshells have enormous gemhearts.{{book ref|twok|36}} [[Dalinar Kholin]] stated that the ones found in chasmfiends were the largest gemhearts he had ever seen, although it is likely that the [[Tai-na]] have even larger ones.

==Singer Gemhearts==
[[Venli]] utilizing [[Envoyform]], advises new [[singers]] that if they don't "want" the new power offered, it won't be able to take place in their gemheart.{{book ref|sa3|i|6}}

[[Listeners]] consider gemhearts sacred and personal, however a [[Fused]] mocks this, saying that gemhearts were just another part of a singer body.{{book ref|sa3|i|7}}

It is possible for [[singers]] to hold more than one [[spren]] in their gemhearts simultaneously, including both Radiant and Voidspren.{{book ref|sa3|120}}

Singer gemhearts are cloudy white.{{book ref|sa3|i|7}}

== Gemheart Harvesting ==
{{image|Chasmfiend Hunt by Eccos.jpg|side=right|width=300px|[[Elhokar]] extracting the gemheart from a [[chasmfiend]]}}
Just as Stormlight is considered valuable by the people on Roshar, so are the Polestones that hold Stormlight. Because much of the land on the continent has been covered by crem, mining is more difficult compared to other planets, and so most gemstones that people use are from gemhearts, which are harvested from various animals.

Some species have gemhearts that are of just one gemstone type, while others vary. Species that only have one type of gemheart are considered more ideal for harvesting.{{wob ref|3772}}

[[Gumfrems]], small chull-like animals, are raised by some farmers in [[Alethkar]] for their small heliodor gemhearts that can be harvested and used to [[Soulcast]] meat.{{book ref|sa3|10}}

Chasmfiends have emerald gemhearts. The ability to Soulcast grain from them, combined with their relatively large size, makes chasmfiend gemhearts extremely valuable. Because chasmfiends are aggressive and extremely dangerous greatshells that cannot be domesticated, humans resort to hunting for their chrysalises on the [[Shattered Plains]] most of the time.

=== The War of Reckoning ===
The discovery of chasmfiends containing such valuable gemhearts completely altered the [[War of Reckoning]]. Attempting to directly assault the [[Parshendi]] home, located far into the [[Shattered Plains]], was risky and expensive. However, when a chasmfiend climbed onto a plateau to pupate, the [[highprince]]s and Parshendi alike would extend themselves to attempt to retrieve the gemheart of the resulting chrysalis. The [[highprince]]s all agreed that these periodic clashes suitably upheld the [[Vengeance Pact]], and the War of Reckoning effectively devolved into little more than a competition spanning half a decade.

During the War of Reckoning, Highprince [[Roion]] was the one who captured the fewest gemhearts.

=== Ecological Effect ===
The hunting for chasmfiends to gain gemhearts will harm [[Roshar]]'s ecology in the long run.{{wob ref|1204}} The extinction or near-extinction of a greatshell species due to excessive hunting has happened before, as in the case of the [[lanceryn]]. In the case of the chasmfiends, the sudden drop in the number of juveniles that reach maturity, due to the hunting of chrysalises, have led to fewer chrysalises appearing over time. This is because the chrysalises are being hunted almost at a faster rate than the chasmfiend population could recover from given their slow growth and slow reproduction rate.{{book ref|sa2|49}}

== Known Species With Gemhearts ==
{{columns|
*[[Chull]]
*[[Chasmfiend]]
*[[Lanceryn]]
*[[Tai-na]]
*[[Singers]]
*[[Gumfrems]]
*[[Axehound]]{{wob ref|13039}}
*[[Cremling]]{{book ref|sa4|114}}
*[[Yu-nerig]]{{book ref|sa1|40}}
}}

== Trivia ==
* Gemheart is used as a term of endearment. [[Dalinar]] uses it to refer to [[Navani]].{{book ref|sa3|24}}
* [[Kandra]]s with a crystal [[True Body]] can use their crystal bones like a gemheart.{{wob ref|15733}}

== Notes ==
<references />
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{{stormlight}}
[[es:Gema corazón]]