No Reserve Price - 1 pcs Diamond (Colour-treated) - 0.41 ct - Round - Fancy intense Greenish Yellow, Green - SI3 - Gemewizard Gemological Laboratory (GWLab)
04
days
14
hours
31
minutes
48
seconds
Starting bid
€ 1
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 € 550 - € 700
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A single 0.41 carat round brilliant diamond, colour-treated with fancy intense greenish yellow, SI3 clarity, Good cut, Very Good polish, Good symmetry, weight 0.40–0.49 ct, GWLab report 254102571027 dated 09/11/2025, sealed by the laboratory.
AI-assisted summary
Description from the seller
GWLAB Grading Report Summary
This certificate, dated 09/11/2025, is for a 0.41 Carat Round Brilliant gemstone.
It is identified as a Fancy Intense (AA) greenish Yellow diamond that has been Treated and Color enhanced. The key grades are: SI3 clarity, Good cut, and Very Good polish, with Good symmetry and Strong fluorescence.
Would you like me to explain what the SI3 clarity grade means?
254102571027
GWLAB Grading Report Summary
This certificate, dated 09/11/2025, is for a 0.41 Carat Round Brilliant gemstone.
It is identified as a Fancy Intense (AA) greenish Yellow diamond that has been Treated and Color enhanced. The key grades are: SI3 clarity, Good cut, and Very Good polish, with Good symmetry and Strong fluorescence.
Would you like me to explain what the SI3 clarity grade means?
254102571027
Details
Lab report number
254102571027
Diamond type
Colour-treated
Natural fancy colour
Green, Yellow
Number of diamonds
1
Fancy colour intensity
Fancy intense
Total carat weight
0.41
Fancy colour overtone
Greenish
Cut grade
Good
Diamond Clarity Grade
SI3
Symmetry
Good
Laboratory Report
Gemewizard Gemological Laboratory (GWLab)
Sealed by laboratory
Yes
Laser Engraved
No
Weight
0.40-0.49
Shape
Round
Cutting style
Brilliant cut
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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.
