Djeva Green Lab Sapphire, Tessellation Cut, 7.7 Carats - DJEVA
Djeva Green Lab Sapphire, Tessellation Cut, 7.7 Carats
Djeva Green Lab Sapphire, Tessellation Cut, 7.7 Carats
Djeva Green Lab Sapphire, Tessellation Cut, 7.7 Carats

Djeva Green Lab Sapphire, Tessellation Cut, 7.7 Carats

SQO13

Regular price$550.00
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💚💚💚 The "DJEVA GREEN" material stands out as exceptionally unique. It epitomizes the most vibrant and deeply saturated green laboratory-created sapphire available currently and is also incredibly scarce. This gemstone is crafted with Akhavan's Tessellation, a cutting technique that yields a stunning architectural style and radiates distinct "art deco" aesthetics.

DIMENSIONS AND SHAPE

Size: 10.0mm x 10.09mm x 8.0mm

Weight: 7.7  carats

Cut: Tessellation

Shape: Square

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

Engagement Ring, Daily Wear, and Pendant

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🌍 GENERAL MATERIAL DESCRIPTION

  • Material Name:Djeva 78
  • Country of Origin : Switzerland
  • Growth Method:

Djeva 78 represents the pinnacle of cobalt green sapphire in the market. The challenge in cultivating cobalt-doped sapphire stems from two primary difficulties. First, incorporating cobalt into the sapphire matrix is complex. Second, cobalt exhibits dual valence states (Co2+ for blue and Co3+ for green), and managing these states during the growth process demands stringent conditions. This material is priced significantly higher, costing 20-30 times more than flame fusion ruby, due to its intricate growth process and was produced in very limited quantities to meet a specialized demand. With the closure of Djeva, the prospects of finding a similar quality green flame fusion sapphire in the future are slim. It is, in many respects, considered one of the ultimate achievements in laboratory-created flame fusion green sapphire.<br><br>This material does not exhibit any fluorescence.

🏭 SPECIFIC Lot INFORMATION

Our stock of A grade Djeva 78 is limited. This grade enables the cutting of the deepest stones. Generally, the boules are small, restricting the size to 11/12mm.


🧠 Gemology Literature

The articles cited here about lab created gemstones are all open source and chronologically sorted for quick and easy access. Each article comes from either the Journal of Gemmology (JofG) or Gems and Gemmology (G&G) archives.