Moissanite vs Diamond: A Buyer's 2026 Guide

By Sophia Rivera · October 7, 2026

Why This Comparison Matters Now

Moissanite has moved from a diamond alternative to a legitimate choice in its own right. Lab-grown diamonds have also disrupted the market. Couples need clear, honest information.

What Is Moissanite?

A lab-created gemstone made of silicon carbide. Every moissanite gem sold today is lab-grown.

Brilliance and Fire

Moissanite has a higher refractive index (2.65) than diamond (2.42), producing more rainbow-colored flashes.

Moissanite: More rainbow fire, especially in sunlight
Diamond: Balanced brilliance with more white-light return

Durability

Diamond scores 10 on the Mohs scale, moissanite scores 9.25. Both are suitable for daily wear.

Price Comparison

1-carat diamond (natural): $4,000–$8,000+
1-carat diamond (lab-grown): $800–$2,500
1-carat moissanite: $300–$600

Color

Modern moissanite is produced in near-colorless grades (G–H equivalent). Premium brands offer colorless options (D–E).

Resale Value

Natural diamonds retain 25–50%. Lab-grown retain 10–30%. Moissanite retains very little.

Ethical Considerations

Both lab-grown options avoid the ethical concerns of mined diamonds. Either is a clean choice.

Making the Decision

Maximum size and sparkle for budget: moissanite. Tradition and value: lab-grown diamond. Natural origin: mined diamond. No wrong choice.