A fabrial is an artifact which harnesses the power of Stormlight in order to perform a given function.
Contemporary Artifabrian engineers made breakthroughs in fabrial technology. There are five known types of contemporary fabrial in three different categories. However, no amount of fabrial science have even approached re-creating relics from the time of the Radiants, such as Shardplate.
The type of gemstone and the size greatly influence the efficiency of the fabrial; the larger the stone, the more Stormlight it can gather and maintain its effect.
According to Navani, a renowned artifabrian, within her notebook, patterns of stormlight filtered through the fabrial determine the power of the gemstone. While the cut and type of the gem determines what kind of spren are attracted to it and can be imprisoned in it. Further, she indicates that there must be thousands of possible combinations. Once a spren is captured and the gem infused with stormlight, the fabrial can be used in machines.
Types of fabrialsEdit
There are five groupings of fabrials (outside of Soulcasting fabrials) discovered so far:
- These are devices created to warn the user of something nearby, be that a person or a sensation or an object; a larger gemstone infused in this type of fabrial increases the range at which the user can be warned. The device is used by Rysn to warn of the approaching Shin is an example of how this type of fabrial can be used.
- Conjoiners are sensitive fabrials. They are created by splitting one gemstone - specifically, a ruby - which will in turn act as a whole, with the actions of one half affecting the other half. The most common example of this type of fabrial is the spanreed by which means communication can be affected over a vast distance. Conservation of force is maintained, for instance, if one attaches a fabrial to a large stone; one would need the same amount of force to lift the fabrial as one would need to lift the stone.
- Reversers act in the opposite way to conjoiners and are created by the splitting of an amethyst instead of a ruby. The reaction of each half is the exact opposite of what one half undergoes; to lift up one half would cause the other half to be forced downwards.
- Augmenters are fabrials which enhance something. They can be used to increase heat or movement, to warm a room or generate a breeze. The Half-Shard shields invented in Jah Keved are an example of an augmenting fabrial.
- Diminishers are fabrials which work opposite of Augmenters. They are used to reduce something, such as pain or heat. The device used by Navani to reduce the pain in the wrist of her nephew, Adolin, is an example of this type of fabrial.
- These devices were demonstrated in Words of Radiance. Navani used water-attracting fabrials powered by garnets to keep bowstrings dry during the battle against the Stormform Parshendi. Mraize also owns one of these, powered by a smokestone, to draw smoke through his chimney. Given the way most fabrials seem to be paired by their effects, repulsing fabrials are likely possible as well.
- There are also clock fabrials. Lirin's clock fabrial was described as small, baring a single dial at the center and a glowing smokestone at its heart, it could measure the minutes and hours.
- Powered by large rubies, set atop poles, with worked golden tines holding them in place, these fabrials give off heat though there is no fire involved.
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Q. You have told us there are more than 30 magical systems on Roshar. I am assuming there are 10 surgebindings and 10 voidbindings. Do the next 10 belong to another such classification? If yes, can you give us the name for it.
A. Fabrials are part of it.