Djeva Fire Blue Lab Spinel, House Of Sylas Cushion Cut, 33.2 Carats - DJEVA
Djeva Fire Blue Lab Spinel, House Of Sylas Cushion Cut, 33.2 Carats
Djeva Fire Blue Lab Spinel, House Of Sylas Cushion Cut, 33.2 Carats
Djeva Fire Blue Lab Spinel, House Of Sylas Cushion Cut, 33.2 Carats

Djeva Fire Blue Lab Spinel, House Of Sylas Cushion Cut, 33.2 Carats

SQO10

Regular price$850.00
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💙😳😲 An astonishingly blue gem that would be perfect for a show-stopping cocktail ring or pendant. If you're in search of a piercing, pure blue gemstone that's built to last a lifetime, look no further!

DIMENSIONS AND SHAPE

Size: 18.43mm x 18.43mm x 13.86mm

Weight: 33.2  carats

Cut: House Of Sylas Cushion

Shape: Cushion

Clarity: Loupe Clean

Inclusions: None

Treatment:None

 

PHYSICAL PROPERTIES

MOHS hardness: 8.25

Pleochroism: 

Dispersion: 0.026

Density: 3.61

Refractive Index: 1.72

Chemical Formula:MgAl2O4


POSSIBLE JEWELRY APPLICATIONS

Cocktail Ring, Pendant, and Brooch

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🌍 GENERAL MATERIAL DESCRIPTION

  • Material Name:Djeva 114
  • Country of Origin : Switzerland
  • Growth Method:

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.<br><br>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. <br><br> 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.


🧠 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.