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| |
| UNHEATED
BLUE SAPPHIRE NATURAL
COLOR
Hardness 9 |
 |
| Chemical properties:
corundum is composed of pure alumina; its colouring is due to metallic | | oxide traces or inclusions. The color of sapphire, due to iron and titanium oxide, gives its best | | effect under daylight. Electric light makes it often dark. | | Gems are generally found in alluvium, but come either from basaltic slags, or from metamorphized
marble. | | | | | 0.89 ct. Oval
natural blue sapphire single | | | 
| | x | Pieces: |  | 1 Sapphire | x | x | Type: | | 100% Natural | | | | | | | | | | | | Color: | | Blue | | | Shape: | | Oval faceted | | | | | | | | | | | | | Weight: | | 0.89
Carats | | | Size: | | 6.5
x 4.9 mm | | | | | | | | | | | | Clarity: | | NFL | | | Luster: | | Excellent | | | | | | | | | | | | Treatment: | | None
(N) | | | Origin: | | Madagascar | |
Comment: Medium blue. | | | | | | | | | | |
Hand
cut by
one of our
| | Refr. Index: | | 1.76-1.78 | | | Hardness | | 9 | | masters
lapidaries. | | | | | | | Depth:3.5
mm. | | | 
| 
| Not
treated
in any way.
| | | |
|
Stone
Price:
USD 979.00
ref:SAboN089
 
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| | This
is a virtual certificate compiled from the lab data for the gemstone being
examined. Clarity is based on magnification under a 10X corrected loupe.
All gemology performed by GGGems. Jean & Alain Darbellay guaranteeing
that this stone is 100% natural. Prices and availability are subject to
change without notice | |
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SAPPHIRE BLUE |
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-
Scale determining the purity of a stone.
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| FL |
NFL |
SI1 |
SI2 |
MI1 |
 |
 |
 |
 |
 |
| Flaw
less |
Near
flaw less |
Slightly
included 1 |
Slightly
included 2 |
Medium
included 1 |
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| MI2 |
MI3 |
VI1 |
VI2 |
HI |
 |
 |
 |
 |
 |
| Medium
included 2 |
Medium
included 3 |
Very
included 1 |
Very
included 2 |
Highly
included |
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