Blue Cobalt YAG, Hexagon Step Cut, 39.4 Carats
SQO49
😲 Captivating cobalt-doped YAG, boasting a vivid hue akin to "Swiss Blue Topaz." For aficionados of the radiant Swiss blue topaz color, this gemstone is a revelation, offering unparalleled vivacity, enhanced durability, and superior optical dispersion. This gem, featuring a striking hexagonal step cut, is ideally suited for Art Deco-inspired jewelry designs, presenting a timeless and versatile choice that promises enduring beauty.
DIMENSIONS AND SHAPE
Size: 20.06mm x 17.38mm x 11.97mm
Weight: 39.4 carats
Cut: Hexagon Step
Shape: Hexagon
Clarity: Loupe Clean
Inclusions: None
Treatment:None
PHYSICAL PROPERTIES
MOHS hardness: 8.5
Pleochroism:
Dispersion: 0.028
Density: 4.6
Refractive Index: 1.83
Chemical Formula:Y3A15O12
POSSIBLE JEWELRY APPLICATIONS
Pendant, Cocktail Ring, and Brooch
🌍 GENERAL MATERIAL DESCRIPTION
- Material Name:Co:YAG
- Country of Origin : Russia
- Growth Method:
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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