FA-NGSA024GB-053-030
Natural Gems Belgium Colored Stone Certification FA-NGSA024GB-053-030
IDENTIFICATION : Natural light greenish blue sapphire - 1.00 ct - Oval - heated
Species : Natural Corundum
Variety : blue Sapphire
DESCRIPTION
Shape & Cutting Style : Oval, Mixed Cut
Measurements : 6.0 x 5.4 x 3.2 mm
Carat Weight : 1.00 Carat
Color : Greenish blue
Clarity : comparable to I3
Transparency : Transparent
Origin : Ceylon
Birefringence : 0.008-0.009
Dispersion : 0.018
Luster : Vitreous
Hardness : 9
RI: o = 1.760 ; e = 1.768
Specific Gravity : 3.99–4.10
COMMENTS
indications of heating , no indications of other treatments
Pleochroism Very pronounced: blue-green (Don't confuse color change with pleochroism. Gems that show two different hues on different crystal axes, can change color according to the direction from which you're viewing them. However, that's a change in color by direction, not by light source.)
Stone is chipped downside, not visible without magnification
Personal Note From Natural Gems Belgium:
This blue sapphire is an amazing piece of sapphire, with most blue hues centered in the stone, on appearance depending on the light angle, this sapphire looks more greenish the blue. The blue hueas are very clear and the gemstone itself has cut grade good, symmetry fair to good, and polish good, resulting in a nice vitreous luster, full of color
