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(Created page with "{{infobox|title={{PAGENAME}}| {{row/image|Emerald sphere.jpg|artist=User: Sheep}} {{row/kv|Type|{{cat tag|Currencies|Currency}}|}} {{row/kv|World|{{tag|Roshar}}|}} {{row/k...") |
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{{infobox|title={{PAGENAME}}|
{{row/image|Emerald sphere.jpg|artist=[[User: Sheep]]}}
{{row/kv|World|{{tag|Roshar}}|}}
{{row/kv|Books|''[[The Stormlight Archive]]''}}
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▲}}{{update|book=sa3}}
'''Spheres''' are the primary currency in most nations on [[Roshar]]. Each one consists of a [[gemstone]] encased in a glass bead little larger than a person's thumbnail.{{book ref|sa1|3}} Gemstones, including the ones in spheres, can temporarily hold [[Investiture]] in the form of [[Stormlight]], offering both a source of light{{book ref|sa1|3}} and fuel for [[fabrial]]s{{cite}} and [[Surgebinding|Surgebinders]].{{cite}} Like all gemstones, spheres naturally leak any Stormlight they have absorbed, over several days{{book ref|sa3|99}} - with larger denominations taking slightly longer.{{cite}} This has led to the practice of leaving spheres out in baskets and cages during highstorms so they can be recharged.
== Appearance ==
{| class="wikitable mw-datatable"
|+ Sphere measurements
|-
! Denomination
! Mass (carats, ct)
! Mass (milligrams, mg)
! Diameter (millimeters, mm)
|-
| Chip || 0.1 || 20 || 3
|-
| Mark || 0.5 || 100 || 5
|-
| Broam || 2 || 400 || 8
|}{{cite}}
The glass sphere is typically the size of a thumbnail while the size of the gemstone inside varies with the denomination.{{book ref|twok|3}} Most spheres are also flattened on one side, to keep them from rolling away when set down. {{book ref|twok|27}} Since gemstones can capture stormlight and glow with this captured light, spheres, by extension, also glow with light.
Only nine of the ten Polestones are used in the spheres,{{book ref|twok|8}} 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.
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