The Heart Of Ignore
The Red Tear
The Sunfire Ruby
When in possession of someone it bestows pyromancy and fluctuates heat depending on the mood but it does not respond to everyone.
(Those who possess innate magic of any kind cannot use the gemstone)
The source of the Gemstones power is blood and offering to Ignore. Though it has built up vast reserves these are not infinite and will weaken over time, needing to be replenished.
One serious drawback of the gemstone is the effect it can have on the body and mind of its user. While being used sparingly is relatively safe sustained use can leave it's weilder "stuck" in a permanent immolated state until the power of the gem wanes enough or the wielder is pacified somehow, either by force or coercion. Worse still, in this state they will become ravenous in their attempts to burn all they can regardless of what or who is close.
God of fire. (Deceased)
When it landed it was taken to the last of his Temples as a divine artifact.
(It came from the sky in an asteroid. The mythos around it is rarely known.)
This beautiful ruby gemstone hums with a faint rhythm not unlike a heartbeat. Some say you can see an eye peering out if you look at it in the right way.