Material to hold spells

[Fero]

I recall a Faerun material (a crystal, gem, or some other earthen material) that could hold a spell indefinately until crushed. However, I can't seem to find any reference to it. Does anyone know of anything like that?

As an aside, are there any lists of non-weapon/armor exotic materials?

Thank you!

[Beni-Kujaku]

I recall a Faerun material (a crystal, gem, or some other earthen material) that could hold a spell indefinately until crushed. However, I can't seem to find any reference to it. Does anyone know of anything like that?

As an aside, are there any lists of non-weapon/armor exotic materials?

Thank you!

There is the skull talisman that acts as a potion of sort. Any one breaking the skull is subject to the spell inside. There's also the Attune Gem (Magic of Faerun) feat that allows you to store a spell in any gem, then activate it (but you don't break the gem).

Edit: https://forums.giantitp.com/showthread.php?442820-Special-Materials-Index
And here's a list of materials and other "mundane" ways to improve equipment. Look at the "miscellaneous" section and at the rest of the thread, not everything is in the first post.

[Fero]

Thank you. The one I am thinking of is a naturally occuring material. I seem to recall the ancient Netherese used it from time to time.

[Jervis]

Thank you. The one I am thinking of is a naturally occuring material. I seem to recall the ancient Netherese used it from time to time.

I think the Netherese might have had something like that in the 2e book but I don’t recall anything in 3.5

[El Dorado]

Is it Chardalyn? https://forgottenrealms.fandom.com/wiki/Chardalyn

[Fero]

Thanks! Chardalyn is what I was thinking of.