No reserve price - 1 pcs Diamond (Natural) - 0.51 ct - Round - K - SI2 - Gemewizard Gemological Laboratory (GWLab)
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Selected by Alberto Fidalgo
Qualified goldsmith, gemmologist and diamond dealer with over fifteen years experience.
Retail Estimate € 800 - € 950
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Natural round brilliant diamond, 0.51 carat, color K, clarity SI2, cut Good with Very Good polish and Very Good symmetry, fluorescence None, GWLab grading report no. 255900171030, sealed by the laboratory.
AI-assisted summary
Description from the seller
255900171030
This image is a GWLAB diamond grading report, which is a document that describes the specific characteristics of a diamond.
Based on the information on the report, here is a description of the stone:
* Diamond Grading Report Number: 255900171030
* Date: 03/09/2025
* Shape and Cut: Round Brilliant
* Measurements: 5.38 x 5.31 x 3.00 mm
* Carat Weight: 0.51 Carats
* Color Grade: K. This grade is at the beginning of the "faint" color category. It means the diamond has a noticeable yellow or warm tint, especially when viewed loose. However, when set in certain metals, particularly yellow gold, the color can appear less prominent. This grade is often chosen by those who prioritize a larger size or a lower price point.
* Clarity Grade: SI2. This stands for "Slightly Included 2." This means the diamond has inclusions (internal flaws) that are "obvious" to a trained gemologist under 10x magnification. While some SI2 diamonds can be "eye-clean" (meaning inclusions are not visible to the naked eye), this is not guaranteed and requires close inspection of the specific stone.
* Cut Grades: "Good," "Very Good," and "Very Good" (likely for Cut, Polish, and Symmetry, respectively). A "Good" cut grade means it reflects a considerable amount of light but is not as brilliant as diamonds with "Excellent" or "Very Good" cut grades.
* Fluorescence: "None." This means the diamond does not show any visible fluorescenc
255900171030
This image is a GWLAB diamond grading report, which is a document that describes the specific characteristics of a diamond.
Based on the information on the report, here is a description of the stone:
* Diamond Grading Report Number: 255900171030
* Date: 03/09/2025
* Shape and Cut: Round Brilliant
* Measurements: 5.38 x 5.31 x 3.00 mm
* Carat Weight: 0.51 Carats
* Color Grade: K. This grade is at the beginning of the "faint" color category. It means the diamond has a noticeable yellow or warm tint, especially when viewed loose. However, when set in certain metals, particularly yellow gold, the color can appear less prominent. This grade is often chosen by those who prioritize a larger size or a lower price point.
* Clarity Grade: SI2. This stands for "Slightly Included 2." This means the diamond has inclusions (internal flaws) that are "obvious" to a trained gemologist under 10x magnification. While some SI2 diamonds can be "eye-clean" (meaning inclusions are not visible to the naked eye), this is not guaranteed and requires close inspection of the specific stone.
* Cut Grades: "Good," "Very Good," and "Very Good" (likely for Cut, Polish, and Symmetry, respectively). A "Good" cut grade means it reflects a considerable amount of light but is not as brilliant as diamonds with "Excellent" or "Very Good" cut grades.
* Fluorescence: "None." This means the diamond does not show any visible fluorescenc
Details
Lab report number
255900171030
Diamond type
Natural
Number of diamonds
1
Total carat weight
0.51
Cut grade
Good
Diamond Clarity Grade
SI2
Diamond Colour Grade
K
Symmetry
Very good
Fluorescence
None
Polish
Very good
Girdle
Medium, Thin
Laboratory Report
Gemewizard Gemological Laboratory (GWLab)
Sealed by laboratory
Yes
Laser Engraved
No
Weight
0.50-0.69
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.
