Gem Stone King logo in gold text with a diamond icon and Since 1903 on a dark blue sparkling background

Round Cut Lab-Grown Diamonds

Experience timeless elegance with our round cut lab-grown diamond jewelry. Sustainable luxury jewelry in gold, silver and platinum made to sparkle for a lifetime.

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Showing 771 of 771 products

Your Love Story in Round Lab-Grown Diamonds

Explore round lab-grown diamond engagement rings with solitaire and two-tone designs. Make your proposal, anniversary, or renewed commitment a moment to remember. Bring classic diamond styling into your wardrobe with a look that feels current and personal.