Cobalt Reduction Tumbler

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by Sirius Glassworks

Peter Gudrunas is the founder of Sirius Glassworks and a master glassblower working in an ancient art, forming contemporary glass that is prized for its classic beauty.

Details: Tumblers are hand-blown and so natural variation occurs in size and decoration. The tumblers may not be exactly as they appear in the photo but they will be a close approximation. These gradient tumblers have mirror-esque exteriors with gradient details and a cobalt interior. The cobalt material reacts varyingly to heat application and changes to a wide array of deep pinks to creamy greens, and between mirrored and ceramic-like finishes.
Ingredients & Materials: Handblown glass formed using wood and steel tools, the fluid nature of the material means every piece is entirely unique.
Measurements: This item measures approximately 2.5" in diameter and 4.5-6.5" tall, and holds 10-12 fl. oz.
Care & Use: Hand wash only. Do not use with hot liquids or transfer between icy and hot conditions. Room temperature or cold liquid and ice cubes are safe.
Sold individually.

Cobalt Reduction Tumbler
Cobalt Reduction Tumbler