No Reserve Price - 1 pcs Diamond (Colour-treated) - 0.46 ct - Round - Fancy vivid Blue - I1 - Antwerp Laboratory for Gemstone Testing (ALGT)
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Current bid
€ 70
No reserve price
Expert
Selected by Maria René Piacenza Bernal
FGA London gemmologist with 20 years' experience as independent diamond expert and trader.
Retail Estimate € 650 - € 750
15 other people are watching this object
 Bidder 8796 | €70 | |
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ALGT Diamond Grading Report #12483171: Natural round brilliant-cut diamond, 0.46 ct, fancy vivid blue, color treated, I1 clarity, cut Fair, polish Good, symmetry Good, girdle Thin–Medium, no fluorescence.
AI-assisted summary
Description from the seller
15 September, 2025
Algt Diamond Grading Report # 12483171
Identification ................................................................. Natural Diamond
Shape And Cutting Style ................................... Round, Brilliant Cut
Measurements ................................................. 5.07 X 5.12 X 2.83 mm
Grading Results
Carat Weight ............................................................................ 0.46 Carat
Color Grade ..........................................Fancy Vivid Blue
Color Origin ..................................................................................... Treated
Clarity Grade ............................................................................................ I1
Cut Grade ...............................................................................................Fair
Additional Grading Characteristics
Polish ....................................................................................................... Good
Symmetry .................................................................................. Good
Girdle ................................................................Thin - Medium (Faceted)
Fluorescence ............................................................................................. None
Comments
The diamond has been treated by one or several processes to change its color.
15 September, 2025
Algt Diamond Grading Report # 12483171
Identification ................................................................. Natural Diamond
Shape And Cutting Style ................................... Round, Brilliant Cut
Measurements ................................................. 5.07 X 5.12 X 2.83 mm
Grading Results
Carat Weight ............................................................................ 0.46 Carat
Color Grade ..........................................Fancy Vivid Blue
Color Origin ..................................................................................... Treated
Clarity Grade ............................................................................................ I1
Cut Grade ...............................................................................................Fair
Additional Grading Characteristics
Polish ....................................................................................................... Good
Symmetry .................................................................................. Good
Girdle ................................................................Thin - Medium (Faceted)
Fluorescence ............................................................................................. None
Comments
The diamond has been treated by one or several processes to change its color.
Details
Natural fancy colour
Blue
Diamond type
Colour-treated
Lab report number
12483171
Fancy colour intensity
Fancy vivid
Number of diamonds
1
Total carat weight
0.46
Cut grade
Fair
Diamond Clarity Grade
I1
Symmetry
Good
Polish
Good
Girdle
Medium, Thin
Laboratory Report
Antwerp Laboratory for Gemstone Testing (ALGT)
Sealed by laboratory
No
Laser Engraved
No
Weight
0.50-0.69
Shape
Round
Cutting style
Brilliant cut
Sold by
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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.
