No reserve price - 1 pcs Blue Topaz - 40.22 ct - International Colored Gemstone Association (ICA GemLab)
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Current bid
€ 107
No reserve price
Expert
Selected by Alberto Fidalgo
Qualified goldsmith, gemmologist and diamond dealer with over fifteen years experience.
Retail Estimate € 700 - € 850
10 other people are watching this object
 Bidder 9004 | €107 | |
|---|---|---|
| Bidder 4904 | €98 | |
| Bidder 9004 | €93 | |
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Natural blue Topaz, 1 stone, total weight 40.22 carats, octagonal step-cut, transparent; ICA GemLab report TH25G111491.
AI-assisted summary
Description from the seller
Gemstone Details
• Species: Natural Topaz
• Variety: Blue Topaz
• Weight: 40.22 carats
• Dimensions: 21.03 × 17.56 × 10.42 mm
• Shape & Cut: Octagonal, Step / Modified Step
• Colour: Blue
• Transparency: Transparent
• Phenomena: None
• Treatment: Topaz is commonly heated or irradiated to improve or change the colour; colour authenticity currently undeterminable.
• Comments: None
• Report Number: TH25G111491
• PIN: 9024
• Date: 15 August 2025
Import Customs Tax
The Buyer Is Fully Responsible For Any Import Customs Duties And Taxes In Their Country. We Do Not Have Any Control Over These Duties, Taxes &, Etc. Import duties, taxes, and VAT are not included in the item price.
Return Policy
After Receiving The Item - "Contact Seller Within - 7 Days"
Shipment
We ship via Expedited Shipping UPS - DHL Express - FedEx from Bangkok, Thailand
Gemstone Details
• Species: Natural Topaz
• Variety: Blue Topaz
• Weight: 40.22 carats
• Dimensions: 21.03 × 17.56 × 10.42 mm
• Shape & Cut: Octagonal, Step / Modified Step
• Colour: Blue
• Transparency: Transparent
• Phenomena: None
• Treatment: Topaz is commonly heated or irradiated to improve or change the colour; colour authenticity currently undeterminable.
• Comments: None
• Report Number: TH25G111491
• PIN: 9024
• Date: 15 August 2025
Import Customs Tax
The Buyer Is Fully Responsible For Any Import Customs Duties And Taxes In Their Country. We Do Not Have Any Control Over These Duties, Taxes &, Etc. Import duties, taxes, and VAT are not included in the item price.
Return Policy
After Receiving The Item - "Contact Seller Within - 7 Days"
Shipment
We ship via Expedited Shipping UPS - DHL Express - FedEx from Bangkok, Thailand
Details
Nr of stones
1
Lab report number
TH25G111491
Gemstone type
Topaz
Total carat weight
40.22
Gemstone colour
Blue
Cut grade
Very good
Transparency
Transparent
Clarity grade
Slight
Treatment
Heat treatment, Irradiation
Origin as given on certificate
No origin given
Laboratory Report
International Colored Gemstone Association (ICA GemLab)
Sealed by laboratory
No
Shape
Octagon
Cutting style
Step cut
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.
