BRAHMA DIAM
Loose Gemstones & Diamonds

Color-Change Lab-Created Sapphire 11.55x6.10mm Emerald Cut Octagon GFCO Report

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Color-change lab-created sapphire

This repeat-production, nominal 3.46 ct lab-created sapphire (synthetic corundum, also described as lab-grown sapphire) has a green-blue to purple color change and a merchant-confirmed emerald-cut octagon shape. Made by the Czochralski crystal-growth process, each supplied stone receives its own matching GFCO report; the gallery photos and video show a representative production stone.

The supplied stone may not be the exact stone shown. Exact weight, measurements, color balance and reflections can vary between individually faceted stones within the stated tolerances.

Gemstone details

  • Material: Lab-created sapphire (synthetic corundum)
  • Crystal-growth process: Czochralski
  • Representative GFCO color wording: GREEN-BLUE / BLUE-GREEN, CC. TO PURPLE
  • Trade shape: Emerald cut / Octagon, merchant confirmed
  • Laboratory shape: Octagon
  • Laboratory cutting style: STEP & CARVING
  • Cut detail: Step cut with grooves on the pavilion
  • Clarity: Loupe clean, merchant assessed
  • Nominal weight: 3.46 carats
  • Weight tolerance: ±0.30 carat
  • Nominal measurements: 11.55x6.10x3.16mm
  • Measurement tolerance: ±0.20 mm for each dimension
  • Post-growth treatment: None, merchant confirmed
  • Faceting location: Our gemstone-cutting facility in Thailand
  • Crystal-production country: Unknown; no material-origin claim is made
  • Laboratory report: Individual matching GFCO Gem Lab report included
  • Quantity: One stone
  • SKU: BLS189

Color change, cut and setting

The representative stone shows a green-blue to blue-green face-up appearance with purple reflections under different illumination and viewing angles. Its clipped-corner octagonal outline, step facets and carved pavilion grooves create a geometric pattern suited to a custom ring or pendant.

Individual GFCO report

The displayed GFCO report AXP20638 / 48609-1 is representative only. The stone supplied with the order receives its own matching GFCO report, which gives that stone's actual identification, weight, measurements and report number. Color and appearance may vary between supplied stones; the individual stone's matching report governs its reported details. Use the supplied stone's actual measurements when planning a setting.

The visible representative report does not state the merchant-confirmed clarity or no-post-growth-treatment conclusions.

Representative photos and video

All photographs and the video are representative production media. Appearance varies with the individual stone, lighting, viewing angle, surroundings and display settings.

About Brahma Diam

Brahma Diam Co., Ltd. is based in Bangkok. We facet colored gemstones in our Bangkok facility and diamonds in our Surat facility, with product information focused on material identity, cutting, measurements and report handling.

Brahma Diam, Bangkok, Thailand