Sirius glassworks / Drinking

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: Each tumbler is formed with hand tools and varies slightly in size and color. 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.
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