• Slightly angled face-up view of an aquamarine-blue lab-grown sapphire with an elongated hexagon outline and geometric facets on a pale background.
  • Aquamarine-blue lab-grown sapphire held in tweezers, showing its elongated hexagon cut as it turns.
  • Horizontal face-up view of an aquamarine-blue lab-grown sapphire, showing its pointed ends and alternating light and dark facets.
  • Angled face-up view of the pale-blue lab-grown sapphire, showing reflections across its elongated hexagon outline.
  • Aquamarine-blue lab-grown sapphire viewed face-up on a pale surface, with bright triangular facet reflections.
  • Aquamarine-blue lab-grown sapphire held upright in tweezers, showing its face-up facets and elongated hexagon outline.
  • Vertical view of the elongated hexagon lab-grown sapphire on a pale background, showing its pointed ends.
  • Brahma Diam card explaining Czochralski seed-grown crystals, selected pulled material and precision cutting, with a lab-grown, not mined disclosure.
  • Representative GFCO Gem Lab report shown with the BLS127 lab-grown sapphire.
  • Low angled view of the pale-blue lab-grown sapphire on a flat surface, showing its raised profile.
  • Oblique view of the aquamarine-blue lab-grown sapphire, showing the sloping facets and outline.
  • Side profile of the lab-grown sapphire on a pale surface, showing its crown and pavilion silhouette.
  • Tilted view of the pale-blue lab-grown sapphire, showing the depth and angular facets.
  • Upright face-up view of the lab-grown sapphire in tweezers against a fingertip, showing its pointed ends.
  • Reverse view of the pale-blue lab-grown sapphire held vertically in tweezers, showing broad pavilion facets.
  • Angled reverse view of the lab-grown sapphire in tweezers, showing pale-blue reflections across the pavilion.
  • Aquamarine-blue lab-grown sapphire resting horizontally on a fingertip, showing its face-up facet pattern.
  • Pale-blue lab-grown sapphire on a fingertip, with bright reflections across its elongated hexagon face.
  • Angled face-up view of the lab-grown sapphire resting on a fingertip against a warm skin background.
  • The loose pale-blue sapphire resting on the back of a hand, providing a visual size reference.
  • A second hand-held size-reference view of the pale-blue loose sapphire.
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12×6 mm Aquamarine-Blue Lab-Grown Sapphire — Dutch Marquise Hexagon

12×6 mm Aquamarine-Blue Lab-Grown Sapphire — Dutch Marquise Hexagon

$330.00 USD
$330.00 USD
Sale Sold out
Taxes included. Standard shipping · Estimated delivery in about 2 weeks.

Individually faceted in our own Bangkok cutting facility, this approximately 12 × 6 mm aquamarine-blue Czochralski-pulled lab-grown sapphire features a Dutch marquise elongated-hexagon outline with modified radiant and step facets. Offered as one loose stone, with a matching GFCO Gem Lab report.

The stone you receive

This is a repeat-production listing, not a one-of-a-kind stone. Photos and video show representative BLS127 production. Your sapphire will use the same lab-grown material, shape and cutting style, but may not be the exact stone pictured.

The standard face-up size is approximately 12 × 6 mm. Small differences in measurements, colour tone, weight and reflections are normal between individually faceted stones. This design is offered by approximate face-up size; carat weight varies between stones. If precise fit or colour matching matters, contact us before ordering to confirm measurements, colour and availability.

Stone details

  • Material: Lab-grown sapphire (synthetic corundum), not natural or mined
  • Growth method: Czochralski pulled
  • Colour: Aquamarine blue; this is sapphire, not aquamarine
  • Shape: Dutch marquise / elongated hexagon; report shape: hexagon
  • Cut: Radiant Modified and Step Modified
  • Face-up size: Approximately 12 × 6 mm
  • Approximate weight: 2.65 carats; varies by stone
  • Approximate depth: 5.2 mm; varies by stone
  • Clarity: Loupe clean, seller observation
  • Treatment: No treatment
  • Report: Matching GFCO Gem Lab report included
  • Faceting: Our own cutting facility in Bangkok, Thailand
  • Quantity supplied: One loose stone
  • SKU: BLS127

About the growth method

We precision-cut this sapphire from selected Czochralski-pulled material suitable for this design. This controlled, seed-grown process draws a crystal from a melt. This material is suitable for precise fancy cuts. “Pulled” describes the growth method; it does not mean natural or mined.

Learn how the Czochralski pulling method works.

Your stone and report

Any report shown in the gallery is representative. The GFCO Gem Lab report supplied will correspond to the sapphire you receive. For current-stone photographs or availability for a particular date, please contact us.

Photos, setting and custom cutting

Our gemstone photos and video were captured in natural daylight. Lighting, viewing angle and screen settings can affect the colour and reflections you see. Your jeweler should confirm the final fit against the supplied stone and protect both pointed ends during setting.

For another size or shape, matched pairs or repeat-production quantities, contact Brahma Diam to discuss your project.

Low stock: 3 left

BLS127

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