Shire glass

Shire glass is a green opaque glass that only exists deep within the Reaching Forest, in areas that are hard to locate, even with maps and navigation tools.

Location
Locating this glass is more difficult than one might think, areas in the reaching forest tend to shift and change frequently from one day to the next, leading to many getting lost deep within. This is especially true, some who have tried to return to certain areas of the forest have spent years attempting to find the exact same spot - but it can be done with enough persistence.

There is only one confirmed location of shire glass - the fabled Emerald Graves - a rumored site of ancient craftsmanship that holds giant worked slabs of this glass, signifying an unknown testament to an ancient civilization lost to time. The glass found there, knwon as shire glass, has proven incredibly difficult to work with and thus obtain. It is impervious to all forms of attempted collection, it cannot be broken, chipped, mined, drilled, exploded, enchanted, melted, or otherwise destroyed, even by magic.

There areo rumors claiming that this glass is actually a gift granted by god, worshipped by an ancient race that's been dead since the dawn of man, their population lived in harmony in the fables City of Glass - cut from shire glass itself. Legend tells that only true followers of this deity are granted the knowledge needed to work the shire glass, and where to find more of it.

The only known sample was actually collected by a ranger, who happened upon a sliver of this glass while exploring the forest, and collected it as a trinket. It had since changed hands many times after it was determined to be useless as jewelry, since it couldn't be cut, broken or polished. It was used as a small dagger for awhile given its excellent durability, before being discovered by a scholar and recognized for what it really was. It now sits in the Great Divination wizard's college, and serves as a challenge to any mage who thinks they can break the secret of how to manipulate it, or to learn of its purpose or secrets.

Uses
Once a sample was collected, it was found to exhibit strange properties - it absorbs magic very well, acting as a near frictionless conductor for any magic, and tends to absorb any light sources brought near it, making it glow slightly.

After years of study it was also observed that it exhibited strange temporal properties, as things in close proximity to the shard seemed to age much slower than expected. The cause of this is unknown but it is a prize sought after by many in the arcane field, though interest has waned after lifetimes of no promising results for maniputlation or duplication.