Fire Orange Lab Sapphire, Tessellation Cut, 7.43 Carats
Fire Orange Lab Sapphire, Tessellation Cut, 7.43 Carats
Fire Orange Lab Sapphire, Tessellation Cut, 7.43 Carats

Fire Orange Lab Sapphire, Tessellation Cut, 7.43 Carats

SQO2394

Regular price$570.00
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🧡🟠💠 This tessellation-cut 7.43-carat gem was fashioned from older crystals produced by the historic Djeva factory (closed in 2021) and displays a vivid orange that imparts an otherworldly glow under all lighting conditions. Its precision tessellation facets maximize brilliance and showcase subtle color shifts, while the material's robust durability makes it ideal for rings, pendants, or daily-wear pieces. Finished with a hard-wearing polish, this gem is perfectly suited for creating enduring, eye-catching jewelry.

DIMENSIONS AND SHAPE

Size: 10.8mm x 10.8mm x 7.45mm

Weight: 7.43  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

Pendant, Daily Wear, and Cocktail Ring

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🌍 GENERAL MATERIAL DESCRIPTION

  • Material Name:Djeva 55sp
  • Country of Origin : Switzerland
  • Growth Method: Flame Fusion

Djeva 50sp, 55sp, 57sp, and 59sp represent a series of orange corundum variants that progressively become redder as their numbers increase. Each of these materials is doped with iron and chromium, contributing to their unique hues and causing them to exhibit red fluorescence. The 50sp variant contains a subtle brown undertone, bearing a resemblance to high-quality citrine. As the sequence progresses, both the brown and orange tones diminish, culminating in a reduction of these components in the higher numbers. The 55sp variant stands out as particularly remarkable for its striking balance between orange and orange-red shades, making it one of the most vibrant lab-created corundum colors, aside from ruby. This intense vividness is attributed to the presence of chromium, which is also responsible for the deep, vivid red of rubies. For those in pursuit of an intensely deep, mesmerizing red/orange shade with minimal brown undertones, the Djeva 55sp is the ideal choice.

🏭 SPECIFIC Lot INFORMATION

After Djeva ceased operations, we acquired several batches of this color from various cutting facilities in Thailand.


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🧠 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.