Why Did My Chain Turn My Neck Green?

A green mark on your skin almost always comes from copper reacting with sweat, lotion or water. Copper is common in brass, plated jewelry and costume pieces, so green skin is a strong hint the chain is plated or not gold. Solid gold rarely does it, though low-karat gold can occasionally leave a faint mark.

What causes the green?

Copper and moisture react and form a green compound that rubs onto skin. Sweat, humidity, lotions, perfume and pool or ocean water speed it up. It is harmless and washes off with soap and water.

Does it mean my chain is fake?

• Gold-plated, gold-tone or brass: the most likely cause, especially once the plating wears.
• Sterling silver: can leave a dark gray mark rather than green.
• 10K gold: it contains other metals including copper, so a faint mark is possible in heavy sweat but uncommon.
• 14K and 18K gold: very unlikely.

To know for sure, check the stamp and have it tested. See How Jewelers Test Gold.

How do I stop it?

• Put lotion and perfume on first, let them dry, then your jewelry.
• Take it off for showers, the gym, the pool and the beach.
• Wipe it after wearing.
• For plated pieces, a clear jewelry coating can help for a while.

Ready for the real thing?

Every gold piece we sell is labeled with its karat. Browse gold chains, visit 260 Main St, Orange, NJ, or call or text (973) 673-3800.