Loose Cubic Zirconia Old Mine Cut 6mm Aquamarine Highest Quality 6A

High-quality synthetic gemstone • Ships Worldwide from the UK

6A, Cubic Zirconia, Old Mine Cut, Aquamarine, 6mm (0.85ct)

Total incl. shipping: £5.10

2 pieces in stock

💎 Secure checkout • 🚚 Ships from the UK • 🔁 14-day returns

Next shipping date: Friday, January 2nd at 16:00

Why Buy from DiamondCZ?

1. Cubic Zirconia is the best diamond simulant

Despite the hype around moissanite, Cubic Zirconia remains the most realistic diamond simulant to the naked eye. Its refractive index and dispersion are closer to diamond in appearance, resulting in a more natural sparkle. Moissanite, while often marketed as a superior alternative, sparkles too intensely and shows rainbow flashes that give it away.

	Diamond	Cubic Zirconia (Closer Match)	Moissanite
Refractive Index	~2.42	~2.15 – 2.18	~2.65 – 2.69
Dispersion (Fire)	0.044	0.060	0.104

2. Quality You Can Trust

Cubic zirconia is often misrepresented. Sellers may label 1A as 3A, or send a few good 6A samples but deliver lower-quality stones in the final order. Others mix poor-quality stones in larger packs without disclosing it.

3. 20 Years of Sourcing Gemstones

DiamondCZ has partnered with expert gem cutters for over 20 years to deliver true 6A, 5A, and 3A stones. With low overheads you’re paying mostly for the gemstone.

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Category Description:

The Old Mine Cut cubic zirconia embodies vintage allure with its cushion-shaped outline and larger, irregular facets. Originating from the 18th and 19th centuries, this antique cut features a high crown, small table, and a deep pavilion, evoking a unique play of light and shadow. It's noteworthy that while the original cuts were designed to preserve the carat weight of diamonds and had varied crown heights, our cubic zirconia copy is cut to an ideal version of the Old Mine Cut, capturing its historic charm with precision and brilliance. The Old Mine Cut cubic zirconia captures the charm of yesteryears, adding a touch of historic elegance to any jewelry piece.