Blue Sapphire - 13.21 ct - Gem research Swiss Lab (GRS) - Cornflower blue

01
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Current bid
€ 8,500
Reserve price not met
Purificacion Aquino Garcia
Expert
Selected by Purificacion Aquino Garcia

Holds a gemmology degree from IGE Madrid and an MBA from University of Santiago de Compostela.

Retail Estimate  € 55,000 - € 70,000
BG
€8,500
AT
€8,000
CH
€7,500

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Natural sapphire, 1 stone, 13.21 ct, cornflower blue, oval, transparent, mixed cut, unheated, origin Sri Lanka, lab report GRS 2025-111290.

AI-assisted summary

Description from the seller



Species: Natural Corandum
Variety: Sapphire
Weight: 13.21 Cts
Measurements: 14 x 10 x 9 mm
Color: Blue
Transparency: Transparent
Cut: Mixed
Treatment: unHeated
Origin: srilanka
Laboratory report/number: GRS/ 2025-111290



Species: Natural Corandum
Variety: Sapphire
Weight: 13.21 Cts
Measurements: 14 x 10 x 9 mm
Color: Blue
Transparency: Transparent
Cut: Mixed
Treatment: unHeated
Origin: srilanka
Laboratory report/number: GRS/ 2025-111290

Details

Lab report number
2025-111290
Gemstone type
Sapphire
Total carat weight
13.21
Gemstone colour
Blue
Transparency
Transparent
Treatment
No evidence of treatment
Origin as given on certificate
Sri Lanka
Laboratory report
Gem research Swiss Lab (GRS)
Sealed by laboratory
No
Title additional information
Cornflower blue
Shape
Oval
Cutting style
Modified cut
ThailandVerified
563
Objects sold
98.36%
protop

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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.

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