Why Choose a Round Lab Diamond for Your Engagement Ring?

Why Choose a Round Lab Diamond for Your Engagement Ring?

The round brilliant cut is the world's most popular diamond shape — and lab-grown round brilliants are quickly becoming the dominant choice for engagement rings in Singapore. Here's why.

Unmatched Brilliance

The round brilliant cut has 58 facets engineered specifically to maximize light return. Of all diamond shapes, it consistently achieves the highest scores for brilliance, fire, and scintillation. When you look at a round brilliant in direct light, almost all of the light entering the stone exits back through the crown — creating that signature sparkle that no other shape fully replicates.

The Case for Lab-Grown

Lab-grown diamonds are chemically, optically, and physically identical to mined diamonds. They're graded by the same international laboratories — GIA and IGI — using exactly the same criteria. The difference is how they're created: in a controlled environment rather than extracted from the earth.

For round brilliants specifically, lab-grown diamonds offer a significant value advantage. A lab-grown round brilliant at 1.5ct and E VS1 will typically cost 60–70% less than an equivalent mined stone. That saving can be reinvested in cut quality, a more refined setting, or simply kept in your pocket. Learn more in our lab diamond pricing guide.

What to Prioritise When Choosing a Round Lab Diamond

Cut quality is the most important factor — always. An Excellent cut round brilliant will outperform a Very Good cut of identical color and clarity in visible brilliance. After cut, color and clarity matter, but with lab-grown diamonds, you can often afford to step up to better grades without compromising on size.

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Every ring at Diamond Ateliers is made to order — designed around your vision, budget, and the person you're giving it to. WhatsApp us to book a free consultation. No obligations.