1 Carat Lab Diamond Round Brilliant Six-Prong Solitaire Engagement Ring in 925 Sterling Silver

One stone. Six prongs. A plain band. Everything that needs to be said is said by the diamond.

The six-prong round brilliant solitaire is the most enduring format in engagement ring history — a design that has remained unchanged in its essential logic for over a century because it resolves, completely, the fundamental question of what an engagement ring should do. Six individual claw prongs lift a 1-carat round brilliant lab-grown diamond high above a plain polished round shank, positioning the stone so that light enters and exits from every angle simultaneously. No halo, no pavé, no side stones: the design makes a deliberate choice to subordinate everything to the diamond, and the result is a ring where the stone is the only thing the eye finds to rest on. The round brilliant cut is the cut format that produces maximum light return from a diamond: 58 facets arranged across the crown and pavilion in a precise geometric pattern that redirects all available light back through the table of the stone as white light and spectral fire. A 1-carat round brilliant at this cut quality produces the full range of diamond optical effects — the broad white reflections, the coloured spectral flashes, and the scintillation pattern visible as the stone moves in natural light. The six-prong setting, as distinct from the four-prong variant, holds the stone more securely while allowing marginally more light to enter the girdle of the stone from the sides; the six prongs also give the stone a rounder, more symmetrical crown silhouette than four prongs, which the round brilliant cut requires for its geometry to read correctly at the table. The plain polished round shank is the only band format that does not compete with the stone — its smooth, uninterrupted surface catches light as a single clean reflection rather than a fragmented sparkle, and its circular cross-section sits comfortably across the full range of finger widths. Lab-grown, certified equivalent to mined diamond in physical and optical properties, and available at a price point that reflects the cost of production rather than the premium of extraction. At $1,057.50, this is the ring.

Why You'll Love It

• The six-prong round brilliant solitaire — a century of design consensus — the six-prong round brilliant solitaire has been the dominant engagement ring format for over a century because it solves the design problem completely; six prongs lift the stone high, maximum light enters from all sides, and nothing competes with the diamond for the eye’s attention
• 1-carat round brilliant — full diamond optical effects at meaningful scale — a 1-carat round brilliant produces the complete range of diamond optical effects — broad white reflections, spectral fire, and scintillation — at a face diameter large enough for these effects to be fully visible and readable without magnification, in any lighting condition
• Six prongs vs four — the correct setting for a round brilliant — six prongs hold the stone more securely than four and give the crown a rounder, more symmetrical silhouette; for a round brilliant cut, six prongs allow the circular stone geometry to read correctly at the table in a way that four prongs, positioned at cardinal points, do not fully achieve
• Plain polished round shank — the smooth, uninterrupted round shank catches light as a single clean reflection rather than a fragmented pavé sparkle; it is the only band format that does not introduce a competing light source to the diamond above it, and its circular cross-section sits comfortably across the full range of finger widths
• Lab-grown diamond — identical optical properties, different economics — lab-grown diamonds are physically and optically identical to mined diamonds; they are graded by the same gemological standards and produce the same light performance; the price difference reflects the cost of production rather than a difference in the stone itself

Product Details

• Metal: 925 Sterling Silver
• Centre Stone: Lab-Grown Diamond (Round Brilliant Cut, 1 Carat)
• Setting: Six-Prong Elevated Solitaire Mount
• Band: Plain Polished Round Shank (925 Sterling Silver)
• Available Sizes: H – T (Australian sizing) — See our Ring Size Guide
• SKU: PYZR00425-1

At LabGrownPro, we believe fine jewellery should be beautiful, ethical, and accessible. Every piece is crafted with care — for you, and for the planet.