Djeva Green Lab Sapphire, Tessellation Cut, 6.85 Carats
SQO280
💚💚💚 Explore this vivid green lab-grown sapphire, an exceptionally rare color produced by the now-closed Swiss Djeva company. The striking hue of this gemstone is both vibrant and elegant, making it perfect for a truly unique, one-of-a-kind piece of jewelry. With its superior hardness and durability, this stunning sapphire will not only capture attention but also stand the test of time, ensuring that your creation becomes a cherished keepsake for generations. Craft something extraordinary with this rare gemstone and let its brilliance shine for a lifetime!
DIMENSIONS AND SHAPE
Size: 10.31mm x 10.17mm x 7.63mm
Weight: 6.85 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
Collections
🌍 GENERAL MATERIAL DESCRIPTION
- Material Name:Djeva 78
- Country of Origin : Switzerland
- Growth Method: Flame Fusion
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.
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.
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