• Face-up yellow-green lab-grown sapphire held vertically in tweezers, with pointed ends and long central facets.
  • Natural-light finished video of representative BLS198, showing crown, marked back and finger-scale views.
  • Yellow-green lab-grown sapphire in an angled crown view on a white surface, showing its elongated six-sided outline.
  • Yellow-green lab-grown sapphire at a shallow crown angle, with long bright yellow facet reflections.
  • Elongated hexagonal lab-grown sapphire turned slightly on white, showing yellow and dark olive reflections.
  • Yellow-green lab-grown sapphire tilted in the opposite direction, revealing a different crown reflection pattern.
  • Yellow-green lab-grown sapphire resting across fingertips, with bright yellow and dark olive reflections.
  • Yellow-green lab-grown sapphire on fingertips in another crown angle, showing its six-sided outline.
  • The elongated lab-grown sapphire on fingertips at a tilted angle, showing large bright facet reflections.
  • Yellow-green lab-grown sapphire held in tweezers in front of fingertips to show its size.
  • Back of the yellow-green lab-grown sapphire held vertically in tweezers, showing broad pavilion facets.
  • Low pavilion-side view of the yellow-green lab-grown sapphire on a white surface.
  • GFCO laboratory report AXP21363 for BLS198, photographed on dark blue fabric.
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Yellow-Green Lab-Grown Sapphire, 12x6mm Dutch Marquise

Yellow-Green Lab-Grown Sapphire, 12x6mm Dutch Marquise

$375.00 USD
$375.00 USD
Sale Sold out
Taxes included. Standard shipping · Estimated delivery in about 2 weeks after dispatch.

BLS198

Low stock: 3 left

Import duties covered.

Standard: about 2 weeks after dispatch. Express: estimated 3–7 days after dispatch. Processing time is separate.

Returns: notify us within 14 days of receipt. Policy conditions and custom-order exclusions apply.

Shipping and returns details Refund policy

A nominal 12x6mm lab-grown yellow-green sapphire for a geometric jewelry project. This Dutch marquise / elongated hexagon is faceted in our own Bangkok unit, combining a long outline with the pictured sample’s double-brilliant and step-cut pattern. One loose sapphire is supplied per purchase.

GEMSTONE DETAILS
• Product: Lab-grown yellow-green sapphire (lab-grown corundum)
• Nominal face-up size: 12 × 6 mm
• Trade shape/cut: Dutch marquise / elongated hexagon
• Pictured sample’s laboratory shape and cutting style: HEXAGON; DOUBLE BRILLIANT & STEP
• Pictured sample’s report color: YELLOW-GREEN / GREEN-YELLOW
• Growth method: Czochralski
• Faceting: Our own Bangkok unit
• Purchase unit: One loose sapphire, without a setting
• SKU: BLS198

CHARACTER AND DESIGN
The contrast between long, orderly facets and brighter angular reflections changes as the gem turns. Its yellow-green palette can look warmer or more olive depending on the angle and surroundings; the finger views give a useful sense of scale.

SETTING GUIDANCE
Have your jeweler check the individual gem’s measurements and depth before making a mount, and choose a setting that protects the pointed ends.

PHOTOGRAPHS AND VIDEO
The photographs and video were taken in natural light. Appearance may vary with illumination, viewing angle, surroundings and display settings. The media shows a representative example of this repeatable design; individual stones may vary slightly in weight, dimensions and appearance.

LABORATORY REPORT
Each supplied gem is accompanied by its own laboratory report. The GFCO report shown is for the pictured sample: AXP21363, code 49259-1, dated 2026-09-24. That sample weighs 2.46 ct and measures 11.97 × 6.05 × 4.66 mm; these exact values and the pictured report number apply to that sample.

ABOUT BRAHMA DIAM
Brahma Diam Co., Ltd. is based in Bangkok, with a gemstone-cutting facility in Bangkok and a diamond-cutting facility in Surat. We offer natural and laboratory-grown gemstones and cut diamonds.

SHIPPING
Free standard shipping, with estimated transit of 7–21 days after dispatch. Please refer to the processing and delivery estimates shown for your destination.

A geometric sapphire with a distinctive yellow-green palette.

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