Cobalt Lab Sapphire, Long Cushion Cut, 22.06 Carats

CQC188

Regular price$700.00
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Gem Note

๐Ÿงจ This would make a stunning piece of jewelry that will last a lifetime! Don't Miss out! Super rare color!

 

DIMENSIONS AND SHAPE

Size: 19.3mm x 13.0mm x 9.25mm

Weight: 22.06  carats

Cut: Long Cushion

Shape: Long Cushion

Clarity: Loupe Clean

Inclusions: None

Treatment: None

 

PHYSICAL PROPERTIES

MOHS hardness: 9.0

Pleochroism: Dichroic

Dispersion: 0.018

Density: 4.0

Refractive Index: 1.76

Chemical Formula: Al2O3

POSSIBLE JEWELRY APPLICATIONS

  • Cocktail Ring
  • Pendant
  • Brooch

Collections

  • Dichroic

๐ŸŒ GENERAL MATERIAL DESCRIPTION

  • Material Name:FF Teal
  • Country of Origin : Unknown
  • Growth Method: Flame Fusion

In the sapphire crystal lattice, the chromophore cobalt demonstrates two distinct valence states: Co2+ (resulting in a blue coloration) and Co3+ (yielding a green hue), contingent upon factors such as temperature, atmospheric conditions, and growth parameters. The resultant coloration can span a spectrum from green to teal to blue, contingent upon the relative abundance of Co2+ and Co3+. These crystals consistently exhibit color variegations, primarily stemming from the intricate challenge of precisely controlling all growth conditions, thereby bestowing upon each gem a distinct and unique hue.

๐Ÿญ SPECIFIC Lot INFORMATION

This material exhibits a notably inconsistent texture akin to the majority of cobalt-doped flame-fusion sapphires. Its provenance remains uncertain. The boules are characterized by their substantial size, typically displaying a predominantly pale green-yellow hue. However, a limited selection of sections can be to reveal an exquisite light blue-green colored gemstone.

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Cobalt Lab Sapphire, Long Cushion Cut, 22.06 Carats - DJEVA
Cobalt Lab Sapphire, Long Cushion Cut,  22.06 Carats
Cobalt Lab Sapphire, Long Cushion Cut,  22.06 Carats
Cobalt Lab Sapphire, Long Cushion Cut,  22.06 Carats
Cobalt Lab Sapphire, Long Cushion Cut,  22.06 Carats

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