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Black Star Sapphire Gemstone Loose 6.81 Carat

Name: Black Star Sapphire Gemstone Loose 6.81 Carat
Brand: jewelclimbplus
SKU: 1055564
Price: 34100.0 JPY
Availability: InStock

About quality

color stone reference table

Please look.

We spend a lot of time on quality checks.

Quality

F: A quality that makes it difficult to see inclusions with a 10x magnifying glass.

VS: Quality that makes it difficult to see the inclusions with the naked eye.

SI: Quality that can be seen with the naked eye * Including fine chips and scratches that are difficult to see with the naked eye and lack of fabric

hue

S: A top-class color for the gem type or a rare color that does not exist in large numbers

A: A quality color that falls within the beautiful or wonderful class of the gem type

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◆◆◆◆For non-Japanese buyer◆◆◆ [With loose certificate] If there is a statement like the above, the product has been inspected in Japan. be attached.

¥34,100 円（税込）

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[Loose stone appraisal certificate included]
A sharp star shines brightly!
Black star sapphire 6.81ct

RECOMMENDED POINTS
Enjoy the stars that cut through the darkness!

Black star sapphire has a unique atmosphere among star sapphires.
The star emerging from the black background gives a very mysterious impression.

The star effect (asterism effect) is actually a phenomenon created by inclusions that are regularly aligned.

It is said that the inclusions seen in ordinary sapphires and rubies are due to rutile inclusions,
Regarding what is seen in black sapphires,
This is due to the light effect of the lamellar structure caused by the inclusion of hematite (iron oxide).

When this black star sapphire is illuminated with an LED light from a smartphone or other device, a large, beautiful star spreads out.
Generally, the back side is often unprocessed and there may be some parts that are not cut, but this does not affect the quality.

Furthermore, the luster of the stone itself is quite impressive.

Be sure to enjoy the stars emerging from the pitch black!

◇Gemstone: Black Star Sapphire ◇Weight 6.81CT ◇Shape: Oval cabochon ◇Dimensions: 9.37 x 11.61 x 5.32 mm ◇Origin: Thailand ◇Hardness 9 ◇Quality SI ◇Hue A ◇Notes: Loose stone certificate included ◇ "About the quality and hue notation of colored stones"