Sprite glass

Sprite glass is near-unbreakable type of glass created by melting obsidian and fulgurite glass and mixing the two materials together into a singular glass substance. Sprite Glass is used in the creation of lightning weapons and is often associated with the power of the gods.

Description
Sprite glass is a smooth and opaque type of glass. It has a deep black colouration with whitish-green veins running through it. When in a solid state sprite glass may be one of the hardest substances made by a sentient being on Sahul, but has a low melting point. When the glass gets heated it first starts to glow a light blue and then slowly becomes more and more white. Once the glass becomes fully white the craftsman can easily mould it into whatever shape they desire. Sprite glass is known to easily becomes electrically charged when hit with a high force. The heat resulting from this electrical charge building up slowly makes the glass so hot that it starts to glow a light blue hue. Once enough charge builds up in the glass it will violently discharge itself, resulting in a a powerful burst of electricity. Some highly specialised weapon smiths take full advantage of this by covering the broad sides of their war hammers and great swords with sprite glass to give them an additional electric punch.

Culture
Sprite glass is closely associated with the power of the divine and as such small religious idols made out of sprite glass are often found decorating personal altars and roadside temples. Both Gnolls and Tortles put special focus on these religious association and as such the both like to make glass orbs out of sprite glass for religious purposes. However the size of these glass orbs differ drastically between the two races: Gnolls use large glass balls which they for one of their many types of divination while Tortles make small sprite glass prayer beads which they use during prayers.