1 pcs Blue Topaz - 79.53 ct - International Colored Gemstone Association (ICA GemLab) - Swiss Blue Topaz
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Description from the seller
Report Number: TH25G115741
Submission Date: 21/10/2025
Report Date: 21/10/2025
PIN: 4551
Group: Gemstone
Species: Natural Topaz
Variety: Topaz
Color: Blue
Shape: Pear
S P E C I E S : Natural Topaz
V A R I E T Y : Blue Topaz
W E I G H T : 79.53 cts
D I M E N S I O N S : 33.53 x 21.86 x 15.10 mm
C U T : Modified Brilliant / Modified Brilliant
S H A P E : Pear
T R A N S P A R E N C Y : Transparent
P H E N O M E N A : None
C O L O R
Blue
T R E A T M E N T S
See Comments
C O M M E N T S
Known in the trade as "Swiss blue topaz"
Topaz is commonly heated or irradiated to improve or
change the color. Color authenticity is currently undeterminable.
Report Number: TH25G115741
Submission Date: 21/10/2025
Report Date: 21/10/2025
PIN: 4551
Group: Gemstone
Species: Natural Topaz
Variety: Topaz
Color: Blue
Shape: Pear
S P E C I E S : Natural Topaz
V A R I E T Y : Blue Topaz
W E I G H T : 79.53 cts
D I M E N S I O N S : 33.53 x 21.86 x 15.10 mm
C U T : Modified Brilliant / Modified Brilliant
S H A P E : Pear
T R A N S P A R E N C Y : Transparent
P H E N O M E N A : None
C O L O R
Blue
T R E A T M E N T S
See Comments
C O M M E N T S
Known in the trade as "Swiss blue topaz"
Topaz is commonly heated or irradiated to improve or
change the color. Color authenticity is currently undeterminable.
Details
Nr of stones
1
Lab report number
TH25G115741
Gemstone type
Topaz
Total carat weight
79.53
Gemstone colour
Blue
Transparency
Transparent
Treatment
Not specified in the report
Laboratory Report
International Colored Gemstone Association (ICA GemLab)
Sealed by laboratory
No
Title additional information
Swiss Blue Topaz
Shape
Pear
Cutting style
Modified brilliant cut
Sold by
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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.
