Blue Cobalt YAG, Asscher Cut, 8.34 Carats

SQO84

Regular price$450.00
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Gem Note

🔥❤️‍🔥🧨 An absolutely stunning Swiss blue topaz cobalt-doped YAG that closely resembles the finest Swiss blue topaz yet boasts a higher refractive index and slightly improved durability. This exceptional gemstone is ideal for creating a breathtaking piece of jewelry that will endure a lifetime.

 

DIMENSIONS AND SHAPE

Size: 9.93mm x 9.86mm x 7.46mm

Weight: 8.34  carats

Cut: Asscher

Shape: Square

Clarity: Loupe Clean

Inclusions: None

Treatment: None

 

PHYSICAL PROPERTIES

MOHS hardness: 8.5

Pleochroism: 

Dispersion: 0.018

Density: 4.6

Refractive Index: 1.83

Chemical Formula: Y3A15O12

POSSIBLE JEWELRY APPLICATIONS

  • Engagement Ring
  • Pendant
  • Daily Wear

Collections

  • Vivid

🌍 GENERAL MATERIAL DESCRIPTION

  • Material Name:Co:YAG
  • Country of Origin : Russia
  • Growth Method: HDSM

A single, unidentified producer, as we understand it, employs the HDSM method to cultivate YAG doped with cobalt (which we believe to be cobalt), exclusively for the gemstone market, with no known scientific applications. This material is available in a spectrum of Swiss blue hues, with the lightest being extremely faint. The outcome is an exceptionally brilliant and strikingly vivid blue gemstone. The deeper variants yield gems of remarkable quality, boasting superior dispersion, hardness, and refractive index compared to irradiated Swiss blue topaz, making them stand out in the realm of materials with a Mohs hardness exceeding 8. Among the most vibrant green to blue color ranges found in any substance are those of Yb:YAG, Co:YAG, and V:YAG.

🏭 SPECIFIC Lot INFORMATION

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Blue Cobalt YAG, Asscher Cut, 8.34 Carats - DJEVA
Blue Cobalt YAG, Asscher Cut, 8.34 Carats
Blue Cobalt YAG, Asscher Cut, 8.34 Carats


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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.