Fulgurite Glass is a boss trophy from the Desert. Fulgoria drops it.
In-game description
Fulgoria's trophy: a branch of sand fused to glass where her lightning struck, pale gold and blue. Hang it on a Boss Trophy, grind it into Wind spirit, or spend 3 at the Augmentation Table to bind her echo to another item.SHOWN ON ITS CARD IN YOUR PACK
How to get it
| Source | Amount | Chance | Where / how |
|---|---|---|---|
 Fulgoria | 2 | ALWAYS |
Grinding
The Grinder turns 10 of it into:
| Grinder | Share | From 10 |
|---|---|---|
| Grindstone | 50% | 90 Wind |
| Treadle Grinder | 70% | 120 Wind |
| Spirit Mill | 90% | 150 Wind |
Trading
Village traders pay about 12 spirits for one. Prices change a little by land and by the spirit you pay in: see Traders.