Does cubic zirconia tarnish?
The short answer is no – pure cubic zirconia does not tarnish. Cubic zirconia is a synthetic gemstone made from zirconium dioxide, which is highly resistant to corrosion and oxidation. The stone itself maintains its brilliance and clarity over time without developing the dark, dull appearance associated with tarnishing.
However, the metal setting or mounting that holds your cubic zirconia can tarnish, which may affect the overall appearance of your jewelry piece. Understanding this distinction is crucial for proper jewelry care and maintenance.
Why does some cubic zirconia jewelry turn green?
When cubic zirconia jewelry turns your skin green, it's not the CZ stone causing the discoloration – it's the metal alloy in the setting. Here's what happens:
- Copper content: Many jewelry alloys contain copper, which oxidizes when exposed to moisture and air
- Chemical reaction: The oxidized copper creates copper carbonate, which has a green color
- Skin contact: This green compound transfers to your skin, leaving temporary discoloration
- Moisture acceleration: Sweat, humidity, and water speed up this process
This reaction is completely harmless and the green discoloration washes off easily with soap and water.
How to clean cubic zirconia jewelry
Keeping your cubic zirconia jewelry clean is simple and helps maintain its sparkle:
Daily cleaning method:
- Mix warm water with a few drops of mild dish soap
- Soak the jewelry for 10-15 minutes
- Gently scrub with a soft-bristled toothbrush
- Rinse thoroughly with clean water
- Pat dry with a soft cloth
Deep cleaning method:
- Create a paste with baking soda and water
- Apply gently with a soft brush
- Rinse well and dry completely
- Polish with a jewelry cloth for extra shine
Preventing tarnish and discoloration
While you can't prevent the CZ stone from "tarnishing" (because it doesn't), you can protect the metal setting:
- Choose quality metals: Opt for sterling silver, gold, or platinum settings
- Apply clear nail polish: Create a barrier on the metal parts that touch your skin
- Keep jewelry dry: Remove before swimming, showering, or exercising
- Store properly: Use anti-tarnish strips or airtight containers
- Clean regularly: Don't let buildup accumulate on the metal
Signs your cubic zirconia needs attention
Watch for these indicators that your jewelry needs cleaning or care:
- Reduced sparkle or dullness in the stone
- Dark spots or discoloration on the metal
- Green marks on your skin after wearing
- Buildup of soap, lotion, or other residues
- Loose settings or prongs
Quality matters: choosing tarnish-resistant cubic zirconia jewelry
Not all cubic zirconia jewelry is created equal. Here's what to look for:
- High-grade CZ: Look for AAAAA-rated stones for maximum brilliance
- Quality settings: Choose sterling silver, gold-filled, or solid gold mountings
- Protective coatings: Some pieces feature anti-tarnish treatments
- Reputable sellers: Buy from established jewelry retailers with quality guarantees
Frequently Asked Questions
How long does cubic zirconia jewelry last?
High-quality cubic zirconia jewelry can last for years with proper care. The CZ stone itself is very durable, rating 8-8.5 on the Mohs hardness scale. The longevity of your piece depends more on the quality of the metal setting and how well you maintain it.
Can I wear cubic zirconia jewelry in water?
While the CZ stone won't be damaged by water, it's best to remove your jewelry before swimming, showering, or exercising. Chlorine, soap, and other chemicals can affect the metal setting and cause buildup that dulls the stone's appearance.
Is it safe to use ultrasonic cleaners on cubic zirconia?
Generally, it's safe to use ultrasonic cleaners on cubic zirconia, but check with the manufacturer first. Some settings or treatments may not be compatible with ultrasonic cleaning. When in doubt, stick to gentle hand cleaning methods.
Ready to invest in beautiful, long-lasting cubic zirconia jewelry? Shop our Cubic Zirconia Earrings for everyday sparkle.
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FAQs
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Use our size chart. For denim, go by measurements.
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