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$40.25
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Coffee mug of a rock specimen, the Trancas geode

4.8 out of 5 stars rating
22251 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 colour. Match or complement the colour of your existing dinnerware set, or gift your friend a mug in his or her favourite colour.

  • 325 ml or 443 ml
  • Dimensions:
    • 325 ml: 8.1 cm D x 9.7 cm H
    • 443 ml: 8.6 cm D x 11.4 cm 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
  • 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. Chraacterised 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 rating22.3K Total Reviews
19615 total 5-star reviews1856 total 4-star reviews345 total 3-star reviews157 total 2-star reviews278 total 1-star reviews
22,251 Reviews
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By Anonymous3 October 2025 • Verified Purchase
Combo Mug, 325 ml
My girlfriend loved it...was her birthday present from me .
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By Carina22 November 2022 • Verified Purchase
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Order was easy and communication great. Order arrived pretty quickly. Unfortunately 2 mugs broke in transit. Helena and the friendly team sent 2 new mugs which arrived safely. Communication was prompt, friendly and extremely helpful. Printing was perfect.
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By Lynda J.3 February 2020 • Verified Purchase
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Professionally finished. Clear clean art work, makes this a gift to treasure. Arrived earlier than anticipated. I would give both 5 stars. The image quality was perfect. Could not fault it. Take time when ordering as this is an excellent gift presented professionally.

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lapidaryuraniumgeodeuv lightultraviolet lightmugcoffee mugrocksrockhoundtrancas

Other Info

Product ID: 256933079819370746
Posted on 29/03/2026, 5:52 AM
Rating: G