1 pcs Diamond (Colour-treated) - 0.34 ct - Round - Fancy deep Blue - SI2 - Gem Report Antwerp (GRA)

02
days
02
hours
52
minutes
19
seconds
Current bid
€ 1
Reserve price not met
Maria René Piacenza Bernal
Expert
Selected by Maria René Piacenza Bernal

FGA London gemmologist with 20 years' experience as independent diamond expert and trader.

Retail Estimate  € 550 - € 650
1 other person has their eye on this
deBidder 0756 €1

Catawiki Buyer Protection

Your payment’s safe with us until you receive your object.View details

Trustpilot 4.4 | 121798 reviews

Rated Excellent on Trustpilot.

0.34 ct round brilliant cut blue fancy deep colour‑treated diamond, SI2 clarity, very good symmetry and polish, slightly thick girdle, sealed by Gem Report Antwerp (GRA) with lab report number 1810036186 dated 17/11/2025.

AI-assisted summary

Description from the seller

Certificate Date 17/11/2025
Certificate Number 1810036186
Identification Natural Diamond (Enhanced)
Shape and cutting style Round Brilliant
Measurements (in mm) 4.40 - 4.44 x 2.78 -

Grading results
Weight (in carat) 0.34 ct
Clarity grade SI2
Color grade Fancy Deep Blue
Polish Very Good
Symmetry Very Good
Fluorescence Faint
Comments
Treated color.

Certificate Date 17/11/2025
Certificate Number 1810036186
Identification Natural Diamond (Enhanced)
Shape and cutting style Round Brilliant
Measurements (in mm) 4.40 - 4.44 x 2.78 -

Grading results
Weight (in carat) 0.34 ct
Clarity grade SI2
Color grade Fancy Deep Blue
Polish Very Good
Symmetry Very Good
Fluorescence Faint
Comments
Treated color.

Details

Lab report number
1810036186
Diamond type
Colour-treated
Natural fancy colour
Blue
Number of diamonds
1
Fancy colour intensity
Fancy deep
Total carat weight
0.34
Diamond Clarity Grade
SI2
Symmetry
Very good
Polish
Very good
Girdle
Slightly thick, Thick
Laboratory Report
Gem Report Antwerp (GRA)
Sealed by laboratory
Yes
Laser Engraved
No
Shape
Round
Cutting style
Brilliant cut
Sold by
GermanyVerified
7646
Objects sold
95.75%
pro

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.

Similar objects

For you in

Diamonds