Djeva Green Lab Sapphire, Antique Cushion Cut, 5.7 Carats
SQO228
💚💚💚Our cherished Djeva 78, a richly saturated green sapphire grown by the esteemed Swiss company. This material represents the pinnacle of flame fusion crystal quality, likely unmatched due to the demanding conditions required for consistent and saturated crystal formation. The antique cushion cut brings out an incredible visual display in this gem. Create a one-of-a-kind piece of jewelry with this extraordinary gemstone—a treasure that will last a lifetime.
DIMENSIONS AND SHAPE
Size: 10.11mm x 10.12mm x 6.69mm
Weight: 5.7 carats
Cut: Antique Cushion
Shape: 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
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🌍 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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