Heartsglass

The term heartsglass describes a small vial worn by the people of The Known World and contains their heart.

General Information
Heartsglass were not originally created for courtship nor were they crafted for business. In the olden days, asha were employed in battlefields, and so noblemen and others of royal blood took to wearing heartsglass in battle, because even there, they were granted special privileges. If they fared badly in their wars, bone witches from the opposing side could take their heartsglass instead of their lives. Over time, other soldiers protested this treatment and began wearing heartsglass of their own, until the asha could no longer distinguish between commoner and royal.