1 pcs Blue, Violet Sapphire - 5.93 ct - Gem research Swiss Lab (GRS)
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Selected by Purificacion Aquino Garcia
Holds a gemmology degree from IGE Madrid and an MBA from University of Santiago de Compostela.
Retail Estimate € 15,000 - € 18,000
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One 5.93 ct natural sapphire, oval step-cut, blue‑violet corundum from Sri Lanka, transparent with no evidence of treatment, with laboratory report GRS2025-068005.
AI-assisted summary
Description from the seller
Species: corundum
Variety: natural sapphire
Weight: 5.93 ct
Measurements: 12.13*8.16
Color: blue violet
Transparency: Transparent
Cut: step oval
Treatment: no
Origin: Sri Lanka
Laboratory report/number: grs2025-068005
Shipping method: (insured shipping advised)
*When the report does not specify anything about treatment, you should add:
“Not mentioned in the report”
**When the report does not specify the origin of the gemstone, you can include it in the lot description, adding:
“Country of origin as expressed herein is only based on a spontaneous declaration of the seller, agreed as possible from the auctioneer, although not substantiated by an official expert opinion from the gemological laboratory issuing the report.”
Species: corundum
Variety: natural sapphire
Weight: 5.93 ct
Measurements: 12.13*8.16
Color: blue violet
Transparency: Transparent
Cut: step oval
Treatment: no
Origin: Sri Lanka
Laboratory report/number: grs2025-068005
Shipping method: (insured shipping advised)
*When the report does not specify anything about treatment, you should add:
“Not mentioned in the report”
**When the report does not specify the origin of the gemstone, you can include it in the lot description, adding:
“Country of origin as expressed herein is only based on a spontaneous declaration of the seller, agreed as possible from the auctioneer, although not substantiated by an official expert opinion from the gemological laboratory issuing the report.”
Details
Nr of stones
1
Lab report number
GRS2025-068005
Gemstone type
Sapphire
Total carat weight
5.93
Gemstone colour
Blue, Violet
Cut grade
Good
Transparency
Transparent
Clarity grade
Slight
Treatment
No evidence of treatment
Origin as given on certificate
Sri Lanka
Laboratory Report
Gem research Swiss Lab (GRS)
Sealed by laboratory
No
Shape
Oval
Cutting style
Modified 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.
