Light Cobalt over Star White – WonderTube – Borosilicate Glass
Because these are hand-pulled, please expect diameter, wall thickness, and length to vary. 

Priced by the pound.

This WonderTube pairs a NS-019 Light Cobalt overlay with a NS-054 Star White core, creating a vivid, modern blue with crisp inner brightness. The cobalt layer delivers a smooth, translucent sapphire tone, while the Star White center keeps the color true, clean, and highly visible in both sculpture and hollow work.

Expect excellent working stability, sharp color definition, and a sleek, glassy finish. This combo stays consistent under heat, holds its saturation beautifully, and offers that ultra-clean, refined look artists love.