Fraunhofer — Spectra Mug
The sun's own spectrum, wrapped continuous — and across it the dark lines where light goes missing. Fraunhofer mapped them before anyone knew their cause: cooler gas absorbing the colours it would otherwise emit.
Printed edge to edge on an eleven-ounce mug, the band runs the full visible range with the principal lines marked in Fraunhofer's lettering — C and F for hydrogen, D for sodium, b for magnesium, the rest for iron, calcium and oxygen.
Spectra reads matter by its light. Here the light is sunlight, and the gaps are the reading.
Materials & fit
Made to order — see the product photos for material and finish details.
Shipping & production
Made to order. Most pieces are produced and shipped within 2–7 business days, with delivery time added on top depending on your destination.
US standard shipping runs $4.75–$7.98 depending on weight and destination — the exact rate is shown at checkout before you pay.
Each piece is made to order, so we can’t accept returns for a change of mind or the wrong size — please check the size guide first.
If an item arrives damaged or misprinted, contact us through the contact form within 30 days of delivery with a photo and we’ll arrange a free reprint or refund — no need to send anything back.
Completes the set
