Does Oxidized Copper Keep Darkening? A Wire Wrapping Tip Every Jewelry Maker Should Know
If you work with copper wire, you've probably wondered:
Does copper continue to oxidize after using Liver of Sulfur (LOS)?
Will my copper jewelry keep getting darker over time?
Does oxidation eventually stop on copper?
Why does oxidized copper look more even than naturally tarnished copper?
Should I seal my oxidized copper jewelry with lacquer?
What are the pros and cons of using a protective coating?
Can I still polish my wire-wrapped jewelry after applying lacquer?
How do I preserve the beautiful contrast between dark patina and shiny highlights?
What's the best way to store oxidized copper jewelry?
How do professional wire wrappers maintain the finish on their copper pieces?
Let's dive into the answers.
Does Copper Continue to Oxidize After Using Liver of Sulfur?
The short answer is yes.
Liver of Sulfur doesn't stop oxidation—it simply speeds up a process that would naturally occur over time. What it does beautifully is create an even, consistent patina across your piece. Without oxidation, copper often develops dark spots and fingerprints unevenly, resulting in a blotchy appearance.
Why I Love Oxidizing Copper
When I oxidize a piece and then polish the raised areas, the design comes alive. The darkened recesses create depth while the polished highlights draw attention to the details of the wire work.
This contrast is difficult to achieve with naturally aged copper alone.
Will the Piece Continue to Change?
Absolutely. Copper is a living metal and will continue reacting to oxygen, humidity, skin oils, and environmental conditions. Over time, the patina may deepen and the polished areas may gradually soften.
Many jewelry artists actually love this evolving character because it gives handmade copper jewelry a unique, antique feel.
How to Slow Down Further Oxidation
If you'd like to preserve the finish for longer, you can apply a protective coating such as a clear lacquer after oxidizing and polishing.
However, there is a trade-off.
Once a lacquer is applied, you can no longer polish the highlights without damaging the coating. Any attempt to remove tarnish or re-polish the surface may leave visible scratches or uneven patches.
My Personal Practice
I prefer to leave my copper pieces uncoated. Instead, I store finished jewelry in airtight pouches to reduce exposure to air and moisture.
If a piece darkens more than desired, a quick touch-up with fine steel wool or a polishing cloth restores the highlights beautifully.
Remember oxidation isn't the enemy. In wire wrapping, it's often what transforms a simple copper design into a piece full of depth, character, and charm.
Happy Wrapping!
Reyney
Regalia by Reyney
