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Coffee mug of a rock specimen, the Trancas geode

4.8 out of 5 stars rating
22684 Total Reviews |
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Style: Combo Mug

Funny, unique, pretty, or personal, it's your choice for the perfect coffee mug. The outside of the mug features a bright white base for your photo, logo, pattern, or saying, while the rim & handle are vividly glazed in rich color. Match or complement the color of your existing dinnerware set, or gift your friend a mug in his or her favorite color.

  • Available in 11-ounce or 15-ounce
  • Dimensions:
    • 11-ounce: 3.2” D x 3.8” H
    • 15-ounce: 3.4” D x 4.5” H
  • Microwave and dishwasher safe
  • Use caution when removing the mug from the microwave. Use a pot holder or glove as necessary if it is too hot to the touch. Do not microwave an empty mug.
  • Strong, ceramic construction
  • Meets FDA requirements for food and beverage safety
  • Printed on demand in Reno, NV
  • Do not overfill and be careful with hot liquids that may scald
  • Keep out of reach of children when filled with hot liquid

About This Design

Coffee mug of a rock specimen, the Trancas geode

Coffee mug of a rock specimen, the Trancas geode

Coffee mug displaying the rock specimen, Trancas geode (a.k.a. Chihuahua geode), from the rock collection of artist J. Mummey. Trancas geodes put on a spectacular show when exposed to short wave UV light. Characterized by their dazzling white drusy crystalline centres, these geodes contain a very small amount of uranium that often fluoresces a brilliant bright-green. Prized for their drusy quartz interiors, and their distinctive green fluorescence under short wave UV, they are generally small and are approximately 37 million years old. These were formed as gas cavities in volcanic rock that later filled with silica rich fluids, producing quartz and chalcedony. Start your morning right with one of nature's most beautiful specimens:)
ACreativeMummey
Artwork designed by
Raleigh, NC, United States
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Customer Reviews

4.8 out of 5 stars rating22.7K Total Reviews
19997 total 5-star reviews1913 total 4-star reviews347 total 3-star reviews163 total 2-star reviews264 total 1-star reviews
22,684 Reviews
Reviews for similar products
5.0 out of 5 stars rating
5 out of 5 stars rating
By Cathy O.May 1, 2019 • Verified Purchase
Combo Mug, 325 ml
Creator Review
Love this mug! Zazzle does such a GREAT job - it's shiny, and pretty, and really shows off the whimsical artwork extraordinarily well. You really can't tell how awesome it's going to be until you hold it in your hands. My new favourite mug! The printing was clear, sharp, and beautiful. Really showcased the artwork in true colours. Excellent craftmanship! Couldn't be happier.
5.0 out of 5 stars rating
5 out of 5 stars rating
By Heidy G.February 10, 2025 • Verified Purchase
Classic Mug, 325 ml
Colors just as bright as shown on-line. Would be nice if the colour choices for interior & handle on the large mug were as many as on the smaller one.
5.0 out of 5 stars rating
5 out of 5 stars rating
By Tracie I.February 16, 2022 • Verified Purchase
Two-Tone Mug, 325 ml
Zazzle Reviewer Program
the mug is of good quality, highly recommend, especially for the price. Quality and clarity of all the pictures were outstanding and the colors were vibrant

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Mugs
lapidaryuraniumgeodeuv lightultraviolet lightmugcoffee mugrocksrockhoundtrancas
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lapidaryuraniumgeodeuv lightultraviolet lightmugcoffee mugrocksrockhoundtrancas

Other Info

Product ID: 256933079819370746
Designed on 2026-03-29, 5:52 AM
Rating: G