What is Cubic Zirconia? The 2026 UK Guide to Piercing Gemstones

Cubic Zirconia (CZ) is a lab-created gemstone made from zirconium dioxide, designed to mimic the brilliance and clarity of a natural diamond at a fraction of the cost. Unlike cheap glass or plastic crystals, CZ is highly durable, ranking 8.5 on the Mohs scale of hardness. In the UK piercing industry, high-quality Cubic Zirconia is the preferred choice for initial and healed jewellery because it offers a premium, high-shine aesthetic without the ethical or financial concerns associated with mined diamonds.

Cubic Zirconia vs. Real Diamond: A Quick Comparison

For the average UK shopper, telling the difference between a high-grade CZ and a diamond can be nearly impossible without professional tools.

Expert Insight: Why CZ is the "Piercing Standard"

In our studios across London and Manchester, we get asked if Cubic Zirconia is "safe" for fresh piercings. The answer lies in the setting, not just the stone.

Professional Advice: "Cubic Zirconia is chemically inert, meaning it won't react with your body fluids during healing. However, the quality of the setting matters most. In the UK, we recommend bezel-set or prong-set CZ in implant-grade titanium. Avoid 'glued-in' stones often found in low-end high street jewellery; the glue can dissolve in saline solution, causing the stone to fall out or trap bacteria near your fresh wound. A well-set CZ will keep its sparkle even after months of daily cleaning."

How to Care for CZ Jewellery in the UK

1. Avoid Chlorine: If you’re visiting a local UK leisure centre or spa, remember that heavy chlorine can eventually dull the surface of lower-grade CZ. Always rinse with fresh water afterward.

2. The "Sparkle" Clean: Over time, skin oils and lotions can film over the stone. Use a soft-bristled toothbrush and mild soapy water to gently restore its original "diamond-like" fire.

3. Check the Setting: Since CZ is used in everyday "curated ear" styles, check your prong settings every few months to ensure the stone remains secure.

Frequently Asked Questions (FAQs)

Does Cubic Zirconia turn green? No. CZ itself is a stable mineral. If your skin turns green, it’s because the stone is set in a low-quality metal like brass or copper. Always choose CZ set in Titanium or 14k Gold.

Is Cubic Zirconia a real crystal? It is a "synthetic" crystal. It has the same physical and optical properties as a natural mineral but is grown in a controlled laboratory environment for perfect clarity.

Why is some CZ more expensive than others? Just like diamonds, CZ is graded. "AAAAA" (5A) grade is the highest quality, offering the most precise cut and brilliance, which is what we use in our premium collections.

🛒Shop the Diamond-Shine Collection

Love the look but hate the price tag? Get the luxury aesthetic of a diamond with the durability of lab-grown science. Explore our Cubic Zirconia Piercing Collection—featuring hand-set 5A grade stones in implant-grade titanium. From minimalist studs to dazzling clicker hoops, find your sparkle today.