1 pcs Diamond (Colour-treated) - 0.29 ct - Round - Fancy deep Greenish Blue - SI1 - Gem Report Antwerp (GRA)






FGA London gemmologist with 20 years' experience as independent diamond expert and trader.
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A 0.29 ct round brilliant color-treated diamond with a fancy deep greenish blue color, SI1 clarity, very good polish and symmetry, GRA Gem Report Antwerp, sealed by the laboratory, certificate 1810036179 dated 17/11/2025, identified as a natural diamond (enhanced).
Description from the seller
Certificate Date 17/11/2025
Certificate Number 1810036179
Identification Natural Diamond (Enhanced)
Shape and cutting style Round Brilliant
Measurements (in mm) 4.37 - 4.45 x 2.51 -
Grading results
Weight (in carat) 0.29 ct
Clarity grade SI1
Color grade Fancy Deep Greenish Blue
Polish Very Good
Symmetry Very Good
Fluorescence Faint
Comments
Treated color.
Certificate Date 17/11/2025
Certificate Number 1810036179
Identification Natural Diamond (Enhanced)
Shape and cutting style Round Brilliant
Measurements (in mm) 4.37 - 4.45 x 2.51 -
Grading results
Weight (in carat) 0.29 ct
Clarity grade SI1
Color grade Fancy Deep Greenish Blue
Polish Very Good
Symmetry Very Good
Fluorescence Faint
Comments
Treated color.
Details
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Catawiki always aims to offer you the best possible buying experience. Our experts virtually review and select every object in line with our submission guidelines. While we strive to provide a detailed description and photographs of each jewellery object, discrepancies or inaccuracies may occur. It is your responsibility to review all of the information provided about an object, including the condition and description, before placing an order. Sellers are responsible for the information, pictures and description provided, including the quality, quantity and nature of the jewelry supplied. A small imperfection that cannot be seen in the photo but is included in the description is not a non-conformity. A Lab Report is not a guarantee, valuation or appraisal regarding the articles described therein. A Lab Report contains only the characteristics of an article described after it has been graded, tested, examined, and analyzed using the techniques and equipment used at the time of the examination from that specific Lab. The results of any other examination performed on the article may differ depending when, how, by whom and with which grading standard the article is examined. In addition, any changes and improvements in techniques and equipment that may have occurred which may enable the examiner to detect, among other things, the use of processes for altering the characteristics of an article which use was previously undetectable, does not automatically mean the object does not conform to its description.
Catawiki always aims to offer you the best possible buying experience. Our experts virtually review and select every object in line with our submission guidelines. While we strive to provide a detailed description and photographs of each jewellery object, discrepancies or inaccuracies may occur. It is your responsibility to review all of the information provided about an object, including the condition and description, before placing an order. Sellers are responsible for the information, pictures and description provided, including the quality, quantity and nature of the jewelry supplied. A small imperfection that cannot be seen in the photo but is included in the description is not a non-conformity. A Lab Report is not a guarantee, valuation or appraisal regarding the articles described therein. A Lab Report contains only the characteristics of an article described after it has been graded, tested, examined, and analyzed using the techniques and equipment used at the time of the examination from that specific Lab. The results of any other examination performed on the article may differ depending when, how, by whom and with which grading standard the article is examined. In addition, any changes and improvements in techniques and equipment that may have occurred which may enable the examiner to detect, among other things, the use of processes for altering the characteristics of an article which use was previously undetectable, does not automatically mean the object does not conform to its description.
