Lab-Grown Diamonds vs Moissanite vs Cubic Zirconia: What’s the Difference?

When it comes to choosing a sparkling gemstone for your jewelry, it can be difficult to tell the difference between lab-grown diamonds, moissanite, and cubic zirconia (CZ) just by looking at them. But each stone has unique qualities that affect its beauty, durability, price, and long-term value. Here's a breakdown to help you choose the right option for your style and budget.

Why Choose Lab-Grown Diamonds?

Lab-grown diamonds have taken the jewelry world by storm in recent years and for good reason. They offer the same stunning beauty and durability as mined diamonds but with a modern, ethical twist.

🔬 How They're Made

✅ Pros

⚠️ Cons

💍 Popular Styles & Settings

🧼 Maintenance

Why Choose Moissanite?

Moissanite offers brilliant sparkle and a modern alternative to diamonds at a fraction of the cost.

🌌 Origins

✨ Sparkle Factor

✅ Pros

⚠️ Cons

💍 Popular Styles & Settings

🧼 Maintenance

Why Choose Cubic Zirconia (CZ)?

Cubic Zirconia is a man-made gemstone created to closely resemble a diamond at a much lower cost.

🧪 What Is It Made Of?

✨ Appearance

✅ Pros

⚠️ Cons

💍 Popular Styles & Settings

🧼 Maintenance

✅ Comparison Table

Feature Lab-Grown Diamonds Moissanite Cubic Zirconia (CZ)
Material Pure carbon (same as natural diamond) Silicon carbide Zirconium dioxide
Origin Grown in lab (HPHT or CVD) Grown in lab (originally found in meteorites) Grown in lab
Hardness (Mohs) 10 9.25 8-8.5
Refractive Index (Sparkle) 2.42 (classic brilliance) 2.65–2.69 (very fiery) 2.15–2.18 (brilliant but glassy)
Color Colorless to fancy colored Slightly warm tones in larger sizes Usually flawless, can appear overly white or artificial
Affordability $$$ $$ $
Best Used For Engagement rings, fine jewelry, heirlooms Affordable engagement rings, everyday wear Costume jewelry, temporary or fashion pieces
Maintenance Needs Low – similar to natural diamonds Low – easy to clean Higher – can cloud, needs frequent cleaning

HAVE ANY QUESTION?

Are lab-grown diamonds real diamonds?

Can moissanite be used in engagement rings?

Does cubic zirconia last long?

Which gemstone has the most sparkle?

Are these stones ethically sourced?