Djeva Fire Blue Lab Spinel, House Of Sylas Cushion Cut, 25 Carats
SQO199
💙💙💙 The Djeva 114 cobalt-doped blue spinel, sourced from the renowned yet now-defunct Swiss company, represents the pinnacle of cobalt spinel coloration. This gem's color can best be described as velvety—deeply saturated yet radiantly bright, capturing the essence of a rare jewel. This remarkable lab-grown spinel, with its intriguing history, offers the perfect opportunity to create a piece of jewelry that is not only spectacular but also enduring. Transform this extraordinary gemstone into a timeless treasure that will be cherished for a lifetime.
DIMENSIONS AND SHAPE
Size: 16.45mm x 16.36mm x 12.45mm
Weight: 25.0 carats
Cut: House Of Sylas Cushion
Shape: Cushion
Clarity: Loupe Clean
Inclusions: None
Treatment: None
PHYSICAL PROPERTIES
MOHS hardness: 8.25
Pleochroism:
Dispersion: 0.018
Density: 3.61
Refractive Index: 1.72
Chemical Formula: MgAl2O4
POSSIBLE JEWELRY APPLICATIONS
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🌍 GENERAL MATERIAL DESCRIPTION
- Material Name:Djeva 114
- Country of Origin : Switzerland
- Growth Method: Flame Fusion
Djeva's "Fire Blue" cobalt spinel stands out as the most vibrant and deeply colored blue gemstone material available. While cobalt glass shares a similar intensity in color, it falls short in terms of refractive index, dispersion, and durability.
The flame fusion cobalt spinel is essentially a type of beta-corundum. The process of cultivating a pure spinel crystal through flame fusion may lead to cracking as it cools. However, integrating additional alumina powder (corundum powder with a Mohs hardness of 9) into the mix enhances the crystal's resilience and strength, preventing it from cracking upon cooling. This modification not only fortifies the crystal but also elevates its hardness to a Mohs rating of 8.25, surpassing the typical hardness of standard spinel.
Cobalt blue spinel presents a fascinating characteristic of red fluorescence. While some specimens exhibit this glowing feature, others do not; however, all of them display vivid red flashes when illuminated under full-spectrum lighting. This phenomenon is truly intriguing!
🏭 SPECIFIC Lot INFORMATION
Djeva 114 "Fire Blue" holds a unique place in gemstone lore, with its production having ceased. Presently, several manufacturers of cobalt flame fusion spinel endeavor to match the luminosity of Djeva's creation, yet none have achieved comparable brilliance. The only other option is spinel grown through the Czochralski method, which comes with a steep price tag. For those seeking a dazzling blue gem that combines beauty with durability to stand the test of time, this material might just be the ideal choice.
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