Cobalt Teal Lab Sapphire, Tessellation Cut, 7.4 Carats
SQO17
😲 TOP teal color lab sapphire, with a perfect green / blue tone. This gem is cut in Akhavan's Tessellation which will make a really beautiful piece of archetectual or art deco jewelry. This gem has it all, vivid color, desirable color and durability to last a lifetime. We can't say enough good things about this gem, and it will likely go quick!
DIMENSIONS AND SHAPE
Size: 10.0mm x 9.82mm x 7.94mm
Weight: 7.4 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
Engagement Ring, Business Wear, and Daily Wear
🌍 GENERAL MATERIAL DESCRIPTION
- Material Name:FF Teal
- Country of Origin : Thailand
- Growth Method:
Cobalt flame fusion sapphire exhibits color variations due to the ability of cobalt to exist in two distinct valence states: Co2+ and Co3+, which impart blue and green hues, respectively. The majority of gemstones cut from this material feature a captivating teal shade, resulting from a blend of these two colors. Occasionally, cobalt may aggregate into minute cobalt aluminate crystals. Each gem cut from this material possesses a distinct uniqueness attributable to varying proportions of Co2+ and Co3+ within the crystal lattice.
🏭 SPECIFIC Lot INFORMATION
This material enjoys immense popularity, yet its availability remains exceptionally limited. The production runs for this material are marked by their small, irregular, and fluctuating volumes. We do our best to high grade the material only select the top 10% resulting in the most saturated gemstones.
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