No reserve price - 30 pcs Diamond (Colour-treated) - 1.01 ct - Square - VS1, I1 - Gemewizard Gemological Laboratory (GWLab)
03
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11
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09
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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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Parcel of 30 natural colour-treated diamonds, total 1.01 ct, square modified-brilliant cut, colour range: multiple colours, clarity range VS1–I1, GWLab certificate no. 250104161020, sealed by the laboratory.
AI-assisted summary
Description from the seller
Diamond Certificate Summary
This certificate from GWLAB (dated 13/11/2025) provides the following details for a parcel of colored diamonds:
• Item: One Parcel of 30 Natural Diamonds
• Shape & Cutting Style: Square Brilliant
• Total Weight: 1.01 Carats
• Color Grade: Multiple Colors
• Clarity Grade: VS1-I1 (A range from Very Slightly Included to Included)
• Enhancements: Color treated
• Comments: A mixture of natural Blue and Green diamonds of various intensities and shades.
The most notable differences from the previous certificate are:
• The quantity is 30 diamonds (up from 28).
• The total carat weight is slightly lower at 1.01 carats (down from 1.02).
• The clarity range is slightly wider/lower, extending to I1 (VS1-I1) instead of VS1-SI3.
250104161020
Diamond Certificate Summary
This certificate from GWLAB (dated 13/11/2025) provides the following details for a parcel of colored diamonds:
• Item: One Parcel of 30 Natural Diamonds
• Shape & Cutting Style: Square Brilliant
• Total Weight: 1.01 Carats
• Color Grade: Multiple Colors
• Clarity Grade: VS1-I1 (A range from Very Slightly Included to Included)
• Enhancements: Color treated
• Comments: A mixture of natural Blue and Green diamonds of various intensities and shades.
The most notable differences from the previous certificate are:
• The quantity is 30 diamonds (up from 28).
• The total carat weight is slightly lower at 1.01 carats (down from 1.02).
• The clarity range is slightly wider/lower, extending to I1 (VS1-I1) instead of VS1-SI3.
250104161020
Details
Lab report number
250104161020
Diamond type
Colour-treated
Number of diamonds
30
Total carat weight
1.01
Diamond Clarity Grade
I1, VS1
Laboratory Report
Gemewizard Gemological Laboratory (GWLab)
Sealed by laboratory
Yes
Laser Engraved
No
Shape
Square
Cutting style
Modified brilliant cut
Disclaimer
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.
