1 pcs Blue Sapphire - 12.49 ct - Lotus Gemology - Natural Unheated Sapphire
01
day
10
hours
18
minutes
21
seconds
Current bid
€ 650
Reserve price not met
Expert
Selected by Francesca Floramo
Graduate gemmologist from GIA with 20 years jewellery experience, specialising in brand jewellery.
Retail Estimate € 8,100 - € 9,900
 | €650 | |
|---|---|---|
 | €600 | |
| €550 | |
Catawiki Buyer Protection
Your payment’s safe with us until you receive your object.View details
Trustpilot 4.4 | 142947 reviews
Rated Excellent on Trustpilot.
Natural blue sapphire, 12.49 ct, 1 stone, cushion antique cut, untreated according to Lotus Gemology report No. 8523-6449.
AI-assisted summary
Description from the seller
Natural blue sapphire weighing 12.49 ct, accompanied by an original Lotus Gemology report (No. 8523-6449, dated 2 April 2025).
Dimensions: 13.68 × 11.75 × 8.55 mm
Shape: Antique Cushion
Cut: Faceted, brilliant crown with step pavilion
Transparency: Transparent
Lustre: Vitreous
Colour: Deep blue, with low saturation
Weight: 12.49 ct
The sapphire displays a deep, dark blue colour with subtle variations in tone depending on the viewing angle. Its faceted cut creates attractive reflections and highlights across the stone.
The stone is supplied loose and unmounted.
Condition: Good overall condition. The stone shows the normal characteristics associated with a natural gemstone.
Treatments: The Lotus Gemology report states “No indications of heating/treatment.” The original report is included with the sapphire.
Origin: Basalt Related. The report does not assign a specific geographic origin.
Shipping: The sapphire will be carefully packaged and shipped with tracking and insurance.
Documentation: Original Lotus Gemology report No. 8523-6449 included.
A substantial 12.49 ct natural sapphire, untreated according to the accompanying Lotus Gemology report, offered as a collector's gemstone or for use in a custom jewellery creation.
Natural blue sapphire weighing 12.49 ct, accompanied by an original Lotus Gemology report (No. 8523-6449, dated 2 April 2025).
Dimensions: 13.68 × 11.75 × 8.55 mm
Shape: Antique Cushion
Cut: Faceted, brilliant crown with step pavilion
Transparency: Transparent
Lustre: Vitreous
Colour: Deep blue, with low saturation
Weight: 12.49 ct
The sapphire displays a deep, dark blue colour with subtle variations in tone depending on the viewing angle. Its faceted cut creates attractive reflections and highlights across the stone.
The stone is supplied loose and unmounted.
Condition: Good overall condition. The stone shows the normal characteristics associated with a natural gemstone.
Treatments: The Lotus Gemology report states “No indications of heating/treatment.” The original report is included with the sapphire.
Origin: Basalt Related. The report does not assign a specific geographic origin.
Shipping: The sapphire will be carefully packaged and shipped with tracking and insurance.
Documentation: Original Lotus Gemology report No. 8523-6449 included.
A substantial 12.49 ct natural sapphire, untreated according to the accompanying Lotus Gemology report, offered as a collector's gemstone or for use in a custom jewellery creation.
Details
Number of stones
1
Lab report number
8523-6449
Gemstone type
Sapphire
Total carat weight
12.49
Gemstone colour
Blue
Transparency
Transparent
Treatment
No heat treatment
Laboratory report
Lotus Gemology
Sealed by laboratory
No
Title additional information
Natural Unheated Sapphire
Shape
Cushion
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.
