Blue Sapphire - 5.77 ct - Lotus Gemology - Natural Blue Sapphire 5.7
01
day
18
hours
19
minutes
25
seconds
Current bid
€ 500
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 € 7,400 - € 9,100
 | €500 | |
|---|---|---|
| €200 | |
 | €1 |
Catawiki Buyer Protection
Your payment’s safe with us until you receive your object.View details
Trustpilot 4.4 | 145414 reviews
Rated Excellent on Trustpilot.
This transparent, faceted blue sapphire weighs 5.77 carats and is accompanied by a Lotus Gemology report noting no evidence of treatment.
AI-assisted summary
Description from the seller
Natural Blue Sapphire – 5.77 Carats – Lotus Gemology Report
Offered for sale is a natural blue sapphire weighing 5.77 carats, accompanied by a gemological report issued by Lotus Gemology, Thailand, dated 9 January 2026.
Gemstone Details
- Gemstone: Natural sapphire
- Weight: 5.77 ct
- Dimensions: 11.19 × 10.09 × 5.88 mm
- Shape: Oval/Cushion
- Cutting style: Faceted, with step-cut pavilion and brilliant-cut crown
- Transparency: Transparent
- Colour: Blue
- Colour saturation: Medium
- Tone: Medium-light
- Treatment: No indications of heating or other treatment detected by the laboratory
- Geographic origin: Undetermined
- Laboratory: Lotus Gemology, Thailand
- Report number: 1948-1872
- Report date: 9 January 2026
Laboratory Report
The gemstone has been examined by Lotus Gemology. According to the report, no indications of heating or any other treatment were detected.
The laboratory was unable to determine the gemstone's precise geographic origin.
A natural blue sapphire with an elegant faceted cut, transparent appearance and a documented gemological examination.
The gemstone is loose and not mounted in jewellery. The accompanying laboratory report can be verified using the report number and PIN provided on the certificate.
Natural Blue Sapphire – 5.77 Carats – Lotus Gemology Report
Offered for sale is a natural blue sapphire weighing 5.77 carats, accompanied by a gemological report issued by Lotus Gemology, Thailand, dated 9 January 2026.
Gemstone Details
- Gemstone: Natural sapphire
- Weight: 5.77 ct
- Dimensions: 11.19 × 10.09 × 5.88 mm
- Shape: Oval/Cushion
- Cutting style: Faceted, with step-cut pavilion and brilliant-cut crown
- Transparency: Transparent
- Colour: Blue
- Colour saturation: Medium
- Tone: Medium-light
- Treatment: No indications of heating or other treatment detected by the laboratory
- Geographic origin: Undetermined
- Laboratory: Lotus Gemology, Thailand
- Report number: 1948-1872
- Report date: 9 January 2026
Laboratory Report
The gemstone has been examined by Lotus Gemology. According to the report, no indications of heating or any other treatment were detected.
The laboratory was unable to determine the gemstone's precise geographic origin.
A natural blue sapphire with an elegant faceted cut, transparent appearance and a documented gemological examination.
The gemstone is loose and not mounted in jewellery. The accompanying laboratory report can be verified using the report number and PIN provided on the certificate.
Details
Lab report number
1948-1872
Gemstone type
Sapphire
Total carat weight
5.77
Gemstone colour
Blue
Transparency
Transparent
Treatment
No evidence of treatment
Laboratory report
Lotus Gemology
Sealed by laboratory
No
Title additional information
Natural Blue Sapphire 5.7
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.
