Spectra — Caps
Barium — Spectra Cap
455.4, 493.4, 553.5, 614.2, 649.9 nanometres.
What you're wearing
The 553.5 line is the green in a flame test, and the reason barium salts end up in fireworks.
Materials & fit
Made to order — see the product photos for material and finish details.
Shipping & production
Made to order. Pressed and shipped in the US, 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.
Same idea, different object
