1 pcs Red Ruby - 3.07 ct - Gem research Swiss Lab (GRS) - Vivid Red Natural Ruby
06
days
13
hours
39
minutes
17
seconds
Current bid
€ 25
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 € 40,000 - € 49,000
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Description from the seller
An exceptional 3.07 carat Natural Ruby, certified by GRS (GemResearch Swisslab), featuring a beautifully proportioned heart shape and a rare vivid red color grade.
This ruby displays outstanding brilliance and saturation, placing it among the most desirable qualities found in Mozambique rubies.
According to the GRS report, this gemstone shows no indication of thermal treatment, making it significantly more valuable and sought after in the global gemstone market.
The origin determination confirms it as a Mozambique ruby, known for producing rubies with vivid coloration and excellent clarity.
Gemstone: Natural Ruby
Color: Vivid Red (GRS grade)
Shape: Heart
Cut: Brilliant/Step (4)
Weight: 3.07 ct
Measurements: 8.56 × 8.47 × 5.32 mm
Treatment: No indication of thermal treatment (No Heat)
Origin: Mozambique
Laboratory: GRS – GemResearch Swisslab
Report Number: GRS2025-080282
Date: 29 August 2025
This is an excellent ruby for collectors, investors, or for creating a high-end jewellery piece.
An exceptional 3.07 carat Natural Ruby, certified by GRS (GemResearch Swisslab), featuring a beautifully proportioned heart shape and a rare vivid red color grade.
This ruby displays outstanding brilliance and saturation, placing it among the most desirable qualities found in Mozambique rubies.
According to the GRS report, this gemstone shows no indication of thermal treatment, making it significantly more valuable and sought after in the global gemstone market.
The origin determination confirms it as a Mozambique ruby, known for producing rubies with vivid coloration and excellent clarity.
Gemstone: Natural Ruby
Color: Vivid Red (GRS grade)
Shape: Heart
Cut: Brilliant/Step (4)
Weight: 3.07 ct
Measurements: 8.56 × 8.47 × 5.32 mm
Treatment: No indication of thermal treatment (No Heat)
Origin: Mozambique
Laboratory: GRS – GemResearch Swisslab
Report Number: GRS2025-080282
Date: 29 August 2025
This is an excellent ruby for collectors, investors, or for creating a high-end jewellery piece.
Details
Nr of stones
1
Lab report number
GRS2025-080282
Gemstone type
Ruby
Total carat weight
3.07
Gemstone colour
Red
Cut grade
Excellent
Transparency
Transparent
Clarity grade
Eye clean
Treatment
No heat treatment
Origin as given on certificate
Mozambique
Laboratory Report
Gem research Swiss Lab (GRS)
Sealed by laboratory
No
Title additional information
Vivid Red Natural Ruby
Shape
Heart
Cutting style
Brilliant 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.
