1 pcs Blue Sapphire - 20.11 ct - Lotus Gemology
06
days
18
hours
12
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02
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Starting bid
€ 1
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Expert
Selected by Purificacion Aquino Garcia
Holds a gemmology degree from IGE Madrid and an MBA from University of Santiago de Compostela.
Retail Estimate € 30,000 - € 37,000
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Description from the seller
Natural Sapphire, 20.11 ct
An exceptional heart-shaped blue sapphire weighing 20.11 carats, certified by the internationally recognized LOTUS Gemology laboratory. The stone is faceted and measures 19.61 x 19.18 x 7.31 mm, showcasing a deep and natural blue color. The certificate (No. 8357-4958, issued February 13, 2024) confirms that the sapphire is completely natural with no indications of heat treatment or enhancements—making this a genuine collector's gem and an exclusive choice for high-end jewelry.
Origin: Basalt-related (likely from Africa or Australia as per LOTUS standards)
Shape: Heart
Cut: Faceted
Color: Deep natural blue
Weight: 20.11 ct
Certification: LOTUS GOLD (comes with report and card, fully verifiable online)
Treatment: None (100% natural, untreated)
This stone combines impressive size with excellent clarity and vibrant color, ideal for exclusive jewelry settings or as an investment piece. It comes complete with certification and official LOTUS packaging.
For international buyers:
Heart-shaped natural blue sapphire, 20.11 carats, certified by LOTUS Gemology. Untreated, faceted, with excellent color and clarity. Comes with a LOTUS GOLD certificate. Perfect for collectors and fine jewelry. Include images of the stone and certificate when listing. Such large, untreated sapphires are extremely rare on the market, especially with international certification.
Natural Sapphire, 20.11 ct
An exceptional heart-shaped blue sapphire weighing 20.11 carats, certified by the internationally recognized LOTUS Gemology laboratory. The stone is faceted and measures 19.61 x 19.18 x 7.31 mm, showcasing a deep and natural blue color. The certificate (No. 8357-4958, issued February 13, 2024) confirms that the sapphire is completely natural with no indications of heat treatment or enhancements—making this a genuine collector's gem and an exclusive choice for high-end jewelry.
Origin: Basalt-related (likely from Africa or Australia as per LOTUS standards)
Shape: Heart
Cut: Faceted
Color: Deep natural blue
Weight: 20.11 ct
Certification: LOTUS GOLD (comes with report and card, fully verifiable online)
Treatment: None (100% natural, untreated)
This stone combines impressive size with excellent clarity and vibrant color, ideal for exclusive jewelry settings or as an investment piece. It comes complete with certification and official LOTUS packaging.
For international buyers:
Heart-shaped natural blue sapphire, 20.11 carats, certified by LOTUS Gemology. Untreated, faceted, with excellent color and clarity. Comes with a LOTUS GOLD certificate. Perfect for collectors and fine jewelry. Include images of the stone and certificate when listing. Such large, untreated sapphires are extremely rare on the market, especially with international certification.
Details
Nr of stones
1
Lab report number
8357-4958
Gemstone type
Sapphire
Total carat weight
20.11
Gemstone colour
Blue
Transparency
Transparent
Clarity grade
Slight
Treatment
No evidence of treatment
Origin as given on certificate
No origin given
Laboratory Report
Lotus Gemology
Sealed by laboratory
No
Shape
Heart
Cutting style
Faceted 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.
