LGD-LAB-10ct

Lab-Grown Loose Half-Moon Cut Diamond

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Complimentary delivery or collect in-store. Your diamond will be shipped within 3 to 5 business days.

Crescent Elegance

The half-moon cut is a semi-circular diamond with one straight edge and one curved edge. Its unique crescent profile makes it the ideal companion for round and oval centre stones, creating a harmonious flow that follows the curve of the main diamond.

Why Choose a Half-Moon Cut?

  • Perfect Curve Match - The curved edge nestles seamlessly against round and oval centres
  • Unique Silhouette - The crescent shape adds distinctive visual interest to any design
  • Brilliant Faceting - Modified brilliant facets deliver lively sparkle within the semi-circular form

Available Sizes

Available in 1.0ct through to 5.0ct in half-carat increments. For stones above 5.0ct, please contact us for a custom quote.

All stones are sourced to order. Typical lead time is 5-10 business days depending on specifications.

Every CRTD diamond is independently certified by IGI or GIA. Our lab-grown diamonds are chemically, physically, and optically identical to mined diamonds - the only difference is their origin. All stones meet our minimum VS1 clarity standard, ensuring exceptional brilliance and fire.

Clean your diamond gently with warm water and mild soap using a soft brush. Store separately in a lined case to prevent scratching. Remove before exposure to harsh chemicals or strenuous activity. Professional cleaning is recommended annually to maintain optimal brilliance.

Sourced to order with an estimated lead time of up to four weeks. Every diamond ships via insured courier within Australia. Full details on returns and our commitment to your satisfaction are available in our shipping policy.

The Diamond

Lab-Grown Loose Half-Moon Cut Diamond

The half-moon diamond is a semi-circular stone with one straight edge and one curved edge, forming a crescent or D-shaped profile. This distinctive geometry makes it the ideal companion for round and oval centre stones, as the curved edge nestles against the centre diamond while the straight edge aligns with the band. The result is a seamless, flowing composition that feels organic and intentional.
Heritage & Craft

Origin

The half-moon cut was developed as a solution to a specific design challenge: how to create accent stones that follow the contour of curved centre diamonds. Standard baguettes and trapezoids leave visible gaps when placed alongside round or oval centres, breaking the visual flow. By cutting a stone with one curved and one straight edge, jewellers created a shape that conforms perfectly to curved outlines, establishing the half-moon as an essential accent shape for contemporary ring design.

How It's Shaped

The half-moon features a semi-circular outline created by one curved edge (matching the curve of the intended centre stone) and one straight edge. Modified brilliant faceting is typically used to maximise light return within the semi-circular form. The curvature of the rounded edge is carefully calibrated to match specific centre stone sizes, ensuring a flush fit with minimal gap. This precision cutting makes each half-moon a bespoke element designed for its specific position in the ring.
Why This Cut
Half-moon diamonds solve the design problem that no other accent shape can - creating a seamless visual curve alongside round and oval centre stones. Their crescent profile hugs the centre diamond, producing a unified composition that feels like a single flowing form rather than separate stones side by side. The brilliant faceting ensures the half-moons sparkle in harmony with the centre, adding light and presence without disrupting the design's rhythm. For engagement rings featuring round or oval centres, half-moons are the definitive accent choice.

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