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Ed Bristol
Tanzanian Sapphire
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6.75 Carat (sold)
Greenish Blue
Medium Dark 75
Lightly Included




- Identification: Natural Unheated & Untreated Blue Sapphire

- Carat: 6.75

- Shape: Cushion

- Measures: 8.93x10.40x7.80 (millimeter)

- Color Grade: Very Good

- Tone: MD75

- Color Zoning: Gradually/Visible

- Clarity: Free of Inclusions

- Cutting Grade: Very Good

o       Brilliancy: 66%

o       Depth: 87%

- Origin: Umba Valley, Tanzania

- Treatment: None


Certificate No: 474524 (see more images)


Overall Grade: Very Good

Comment: Here is an adventurous massive sapphire, basically blue but with movement and from different angles green is mixing into the outer frame. Classic multicolor sapphire from the Umba valley, only they usually come in under 2 carats. Difficult to capture on photo but quite a eye-catcher in person. Prefect cutting, zero window and a good sparkle add to make this a value deal in untreated 100% clean blue sapphire above 5 carat but well under 3k/carat. 


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