SKOL'EZITE, noun A mineral allied to Thomsonite, occurring crystallized and massive, colorless and nearly transparent. When a small portion of it is placed in the exterior flame of the blowpipe, it twists like a worm, becomes opake, and is converted into a blebby colorless glass.
Source: Webster's 1828 American Dictionary ↗ · public-domain · returned verbatim, no AI