ID 389895 
Lot 2  | FANCY DEEP BROWNISH-ORANGE DIAMOND AND DIAMOND RING WITH GIA REPORTS
Estimate value
$ 20 000 – 30 000 
METAL: Platinum and 18k rose gold
DIAMONDS: 1 pear brilliant-cut diamond measuring 11.11 x 6.99 x 4.36 mm and weighing 2.03 carats; 1 pear brilliant-cut fancy deep brownish orange diamond measuring 11.33 x 7.56 x 4.64 mm and weighing 2.34 carats
CERTIFICATE: With report 2195387488 dated 21 May 2018 from the Gemological Institute of America stating that the 2.03 carat diamond is E color, VS 2 clarity
- With report 2205650294 dated 22 October 2019 from the Gemological Institute of America stating that the 2.34 carat diamond is Fancy Deep Brownish Orange color
MARKS: PT950, OR
SIZE/DIMENSIONS: US ring size 6.25
GROSS WEIGHT: 4.9 grams
Orange diamonds without any additional modifying color are extremely rare- many exhibit secondary colors such as brown or yellow. Orange diamonds get their color from nitrogen, the same atom that produces the color yellow. However, the difference between orange and yellow diamonds is how the nitrogen atoms are grouped in the diamond crystal lattice. Slight variations in the structure can cause the diamond to absorb blue and yellow light while selectively transmit orange.
| Medium: | Coloured diamond | 
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| Auction house category: | Rings | 
| Medium: | Coloured diamond | 
|---|---|
| Auction house category: | Rings | 
| Address of auction | 
CHRISTIE'S 8 King Street, St. James's SW1Y 6QT London United Kingdom  | |
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| Preview | 
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| Phone | +44 (0)20 7839 9060 | |
| Buyer Premium | see on Website | |
| Conditions of purchase | Conditions of purchase | 









