316L stainless steel jewelry does not turn your skin green. Green skin is caused by copper reacting with sweat and skin acids, and 316L contains no copper as an alloying element. Instead it holds 16 to 18 percent chromium and 2 to 3 percent molybdenum, which form a stable oxide layer on the surface. That layer keeps metal ion release extremely low, which is why 316L is well tolerated by most people and safe for daily wear, including in water.
Every Caltian piece is made from this same 316L surgical-grade stainless steel, designed in Sweden and backed by a lifetime warranty.
Why does some jewelry turn skin green?
The green mark is not dirt and it is not a sign that the metal is fake or dangerous. It is a simple chemical reaction. Jewelry that contains copper, brass or bronze reacts with the moisture, salt and slightly acidic compounds in your sweat. This produces copper salts (copper chloride and copper carbonate) that are green and rub off onto your skin.
Most inexpensive fashion jewelry is copper-based with a thin plating on top. Once that plating wears through, the copper underneath is exposed and the reaction begins. Even some lower grades of "stainless steel" jewelry are mixed with cheaper alloys that can discolour over time.
Why 316L is different from regular stainless steel
Not all stainless steel is equal. The "316L" grade is the surgical-grade steel widely used in medical and surgical applications, and there is a reason for that.
- Chromium (16 to 18 percent): reacts with oxygen to build a passive oxide film that constantly repairs itself if scratched.
- Molybdenum (2 to 3 percent): dramatically increases resistance to salt, chlorine and acids, the exact things that break down cheaper metals.
- Low carbon (the "L"): reduces corrosion at the grain boundaries, so the steel stays stable over years of wear.
The result is a metal that does not rust, keeps its finish and releases almost none of the ions that cause green skin or skin reactions.
How do you keep 316L jewelry looking new?
One of the reasons 316L is ideal for everyday wear is that it needs almost no maintenance. To keep a piece looking its best, wipe it with a soft cloth now and then, and if it picks up oils or residue, wash it with warm water and a drop of mild soap, then dry it fully. There is no need for special polishes or anti-tarnish treatments, because the steel does not tarnish in the first place. You can wear it in the shower, the gym and the sea and simply rinse it afterwards.
Is 316L jewelry safe for sensitive skin?
For most people, yes. 316L does contain nickel, but the nickel is locked into the steel's structure and is released only in very small amounts, below the limits set by EU regulations for skin contact. That is why it is one of the more reliable everyday choices for people who react to cheaper metals. If you have a severe nickel allergy you may still react, so it is worth knowing your own sensitivity. If you have had green marks or irritation from copper-based jewelry, surgical-grade stainless steel is a much safer alternative.
How to tell if your jewelry is actually 316L
Quality varies, so it helps to know what to look for:
- The seller states the grade explicitly as 316L or "surgical-grade", not just "stainless steel".
- It is sold as waterproof and safe to shower, swim and train in.
- It carries a real warranty. A brand that stands behind the metal with a lifetime warranty is confident it will not tarnish or discolour.
Frequently asked questions
Does 316L stainless steel rust?
No. The chromium oxide layer prevents rust even with regular water and sweat exposure.
Can I shower and swim with 316L jewelry?
Yes. 316L is waterproof and resistant to both chlorine and salt water, so you can keep it on in the shower, pool and ocean.
Will 316L turn my skin green or black?
No. With no copper to react with your skin, 316L will not leave the green marks that copper-based jewelry can cause.
Is stainless steel jewelry good for men?
Yes. It is strong, low-maintenance and keeps its finish, which makes it ideal for everyday men's necklaces and bracelets.
Shop 316L jewelry built to last
Caltian designs men's necklaces and bracelets in 316L surgical stainless steel: waterproof, hypoallergenic and made so they will not tarnish. Explore the men's necklaces and men's bracelets collections, each backed by a lifetime warranty and free European shipping over 35 euro.
