Esferas

Spheres are the major units of currency used on Roshar.

They are made of small gemstones that are set inside glass spheres, that are typically the size of a thumbnail. Most spheres are also flattened on one side, to keep them from rolling away when set down.

The gemstones come in three denominations; chips, marks and broams. There are five chips to a mark, and four marks to a broam. Chips barely have any glow at all, since they are just a sliver of gem, but marks glow almost as bright as a candle. Only nine of the ten Polestones are used in the spheres, but it is as of yet unknown whether smokestones or heliodor are the gem not used, or the reason for the tenth gem's absence. Spheres also have five levels of value, meaning several spheres conaining different types of gems are worth the same amount.

If left outside during a highstorm, spheres are infused with Stormlight. Over time, all of the Stormlight will escape leaving the sphere dun, so it ceases to glow. Dun spheres are worth the same as infused ones but since their glow is what proves that they aren't counterfeit, people are often suspicious of those spending dun spheres. They will call in a moneylender to judge their authenticity. Instead of just leaving their spheres out in a highstorm, people often exchange their dun spheres with moneylenders for infused ones or pay a fee to have their spheres infused in the moneychanger's secure baskets. In addition to currency, infused spheres are often used as a source of light, since they are much cheaper and more reliable then candles and lanterns. The all the spheres in the treasury of Kharbranth are used in the Palanaeum as a source of light, since the Palanaeum is the most secure place in Kharbranth.

Relative Value

Below is a table of sphere values in terms of diamond chips, the lowest valued sphere. It is not yet comprehensive, and there is another unnamed level of sphere value.

Gem type	Chips	Marks	Broams
Diamond	1 diamond chip	5 diamond chips	20 diamond chips
Garnet	5 diamond chips	25 diamond chips	100 diamond chips
Sapphire	25 diamond chips	125 diamond chips	500 diamond chips
Emerald	50 diamond chips	250 diamond chips	1000 diamond chips

Notes

Este artículo es muy corto. Por favor, ayuda a The Coppermind a expandirlo.