Introduction
Cubic zirconia (CZ) has become one of the most popular alternatives to diamonds because of its brilliance, affordability, and versatility. Whether used in rings, earrings, bracelets, or pendants, many people love how CZ stones mimic the sparkle of real diamonds. But one common question always comes up: Does cubic zirconia tarnish? In this detailed guide, we’ll explore the truth behind CZ care, longevity, and how to keep it shining for years.
What Is Cubic Zirconia?
Cubic zirconia is a synthetic gemstone created from zirconium dioxide. It’s lab-grown, which allows manufacturers to control clarity, color, and cut. Because of this, CZ stones appear nearly flawless and extremely sparkly.
While CZ looks similar to diamond, it is much softer on the Mohs hardness scale (8–8.5 compared to a diamond’s 10). This softness plays a role in how well the stone resists scratching and dullness over time.
Does Cubic Zirconia Tarnish?
The simple answer: cubic zirconia itself does NOT tarnish.
CZ is not a metal, so it cannot oxidize or rust. The stone will not change color, corrode, or develop tarnish like silver or other metals.
However, the setting and the surface of the CZ can affect how it appears. If your CZ jewelry looks dull or “tarnished,” the cause is usually something else.
Why Cubic Zirconia May Look Dull or Cloudy
Even though CZ does not tarnish, it can lose some sparkle over time. Here are the main reasons:
1. Dirt and Oil Build-Up
Lotions, perfumes, sweat, makeup, and natural skin oils can coat the surface of the stone. This layer blocks light, making the CZ look cloudy.
2. Scratches on the Stone
Cubic zirconia is durable, but not scratch-proof. Repeated contact with hard surfaces or abrasive materials can cause small scratches, reducing shine.
3. Tarnish on the Metal Setting
While the CZ stone stays untarnished, the metal holding it may tarnish.
Common examples:
- Sterling silver can oxidize and darken.
- Gold plating can wear off, exposing the base metal underneath.
- Low-quality alloys may discolor over time.
This tarnish around the stone can make the entire piece look less attractive, even though the CZ itself is fine.
How to Prevent Cloudiness and Maintain Shine
Caring for cubic zirconia is simple, but consistency matters. Here are the best tips:
1. Clean Regularly
Use warm water, mild dish soap, and a soft toothbrush. Gently scrub the stone and rinse thoroughly. Doing this once a week keeps your CZ sparkling.
2. Avoid Harsh Chemicals
Hairspray, chlorine, bleach, and beauty products can damage the appearance of CZ and its metal setting. Always remove your jewelry before swimming or cleaning.
3. Store Properly
Keep CZ jewelry in a soft pouch or lined box to prevent scratches. Avoid tossing pieces together, especially rings and bracelets.
4. Remove During Activities
Take off your jewelry during workouts, gardening, washing dishes, or any activity where the stone could get scratched or dirty.
How Long Does Cubic Zirconia Last?
With proper care, cubic zirconia can last many years while maintaining its sparkle. It won’t tarnish, but it may slowly lose brilliance as microscopic scratches accumulate. Fortunately, professional polishing or replacing the stone is inexpensive compared to diamonds.
Is Cubic Zirconia Worth It?
Absolutely! CZ offers:
- Brilliant sparkle
- Affordable prices
- A wide variety of shapes and colors
- No ethical mining concerns
For fashion jewelry or everyday wear, cubic zirconia is a fantastic choice—just remember to clean and care for it.
Final Word
So, does cubic zirconia tarnish?
No—the stone doesn’t tarnish, but it can appear dull due to dirt, scratches, or tarnished metal settings. With regular care, CZ jewelry can keep shining beautifully for years.
If you want a stunning, affordable, and low-maintenance gem, cubic zirconia remains one of the best options available.
