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Untreated Black Opal 0.83 (OOP083)

N1 black untreated welo opal in round cabochon from lightning ridge in finest blue
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Price:
$2,200.00
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0.83 Carat
Neon Green / Deep Blue  
Pattern: Flame, Ribbon
Opaque - Free of Inclusions

Details:

GRADING REPORT OOP03

- Identification: Natural Unheated & Untreated Black Opal
- Carat: 0.83
- Shape: One-sided Drop Cabochon
- Measures: 9.95x5.22x2.65 (millimeter)
- Body Color: Black (N2)
- Play of Color: Very Good 
- Color Range: Green, Blue, Violet 

- Pattern: Broad Flame, Ribbons
- Clarity: Opaque - Free of Inclusions
- Cutting Grade: Very Good
  - Finish: Very Good
  - Depth: 51%
- Origin: Australia

Treatment: None

Certificate No: IGE D35013

Overall Grade: Excellent

Comment: Untreated black opal, the today rarest type when untreated (often heated and 'smoked'). With green and blue as mobile colorplay on almost jet black base (N2) it reminds of images of green parts of earth seen from space. Opals are not only valued per carat but also in regards to shape and visible surface with colorplay. This gem shows 10x5mm of 'active' surface and its shape allows a pendant, even though the total weight is under one carat. The dominant green parts are neon intense, the blue sections display a deeper calmer blue crossing into violet but not purple. The flat 'underside' will accomodate a setting with a closed back for additional protection. This oldest and classic type of opal comes with the fame of an ancient noble gem (compared to the new, but also very beautiful Welo-Opals from Ethiopia). Addictive sight under longer study and reserved beauty to the casual observer. 

 

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