1 pcs Orange, Yellow Sapphire - 11.29 ct - Bellerophon Gemlab
01
day
17
hours
05
minutes
05
seconds
Starting bid
€ 1
Reserve price not met
Expert
Selected by Purificacion Aquino Garcia
Holds a gemmology degree from IGE Madrid and an MBA from University of Santiago de Compostela.
Retail Estimate € 1,300 - € 1,600
No bids placed
Catawiki Buyer Protection
Your payment’s safe with us until you receive your object.View details
Trustpilot 4.4 | 128340 reviews
Rated Excellent on Trustpilot.
Natural yellowish orange sapphire, 11.293 carats, oval faceted cut, 1 stone, transparent, heat treated, origin East Africa, certified by Bellerophon Gemlab (C01508).
AI-assisted summary
Description from the seller
Natural Yellowish Orange Sapphire – 11.293 ct
Certified by Bellerophon Gemlab (Paris, France)
Offered here is a beautiful natural sapphire with an impressive size and vibrant colour, accompanied by an official Bellerophon Gemlab certificate.
Gemstone Details
• Gemstone: Natural Sapphire
• Weight: 11.293 carats
• Shape: Oval
• Measurements: 12.92 × 11.71 × 8.78 mm
• Colour: Vivid Yellowish Orange
• Transparency: Transparent
• Colour Stability: Stable
• Fluorescence: None
Treatment
• Indications of heating
(A common and accepted enhancement in sapphires, used to improve colour and clarity.)
Origin
• Geographic Origin: East Africa
Certification
• Laboratory: Bellerophon Gemlab S.A.S
• Location: Place Vendôme, Paris, France
• Report Number: C01505
• Report Date: 03 February 2026
The gemstone has been professionally examined and authenticated by qualified gemmologists. The report confirms the stone as natural sapphire with no evidence of colour instability.
Ideal For
• High-end jewellery (ring or pendant)
• Gemstone collectors
• Investment-grade coloured gemstone lovers
The gemstone will be shipped securely and carefully packaged.
Original laboratory report included with the lot.
A rare opportunity to acquire a large, vivid-coloured natural sapphire with reliable European certification.
Natural Yellowish Orange Sapphire – 11.293 ct
Certified by Bellerophon Gemlab (Paris, France)
Offered here is a beautiful natural sapphire with an impressive size and vibrant colour, accompanied by an official Bellerophon Gemlab certificate.
Gemstone Details
• Gemstone: Natural Sapphire
• Weight: 11.293 carats
• Shape: Oval
• Measurements: 12.92 × 11.71 × 8.78 mm
• Colour: Vivid Yellowish Orange
• Transparency: Transparent
• Colour Stability: Stable
• Fluorescence: None
Treatment
• Indications of heating
(A common and accepted enhancement in sapphires, used to improve colour and clarity.)
Origin
• Geographic Origin: East Africa
Certification
• Laboratory: Bellerophon Gemlab S.A.S
• Location: Place Vendôme, Paris, France
• Report Number: C01505
• Report Date: 03 February 2026
The gemstone has been professionally examined and authenticated by qualified gemmologists. The report confirms the stone as natural sapphire with no evidence of colour instability.
Ideal For
• High-end jewellery (ring or pendant)
• Gemstone collectors
• Investment-grade coloured gemstone lovers
The gemstone will be shipped securely and carefully packaged.
Original laboratory report included with the lot.
A rare opportunity to acquire a large, vivid-coloured natural sapphire with reliable European certification.
Details
Nr of stones
1
Lab report number
C01508
Gemstone type
Sapphire
Total carat weight
11.29
Gemstone colour
Orange, Yellow
Cut grade
Excellent
Transparency
Transparent
Clarity grade
Slight
Treatment
Heat treatment
Origin as given on certificate
Africa
Laboratory Report
Bellerophon Gemlab
Sealed by laboratory
No
Shape
Oval
Cutting style
Faceted cut
Sold by
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.
