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Marquise|Natural|IGI

3.50ct F SI2 Marquise Natural Diamond

F/SI2 • IGI 657443176

Shape and cutting style on the report: Marquise brilliant

Certificate IGI 657443176

Diamond specifications and retailer prices

From €43,553 EUR
As of October 28, 2026
Save €12,897 EUR (23%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: €56,450 EUR at MOH London · As of October 29, 2026
View at MOH London

About this 3.5ct natural marquise diamond

This 3.5ct natural marquise sits in the three to five carat band, graded F colour (colourless) and SI2 clarity (slightly-included) and certified by IGI 657443176. Listed at 2 retailers as of October 28, 2026, with prices from €43,553 to €56,450, a €12,897 spread on the same certified stone. MOH London lists it at €56,450. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

3.50
Carat
F
Color
SI2
Clarity
-
Cut

Specifications

Cut
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle38.9°
Pavilion angle42.1°
OriginNatural
Grading LabIGI
CertificateIGI 657443176
Dimensions14.44 × 7.76 × 5.32 mm
L/W Ratio1.86
Girdle conditionFaceted
Top View
14.44 mm7.76 mm3.50 ctF / SI2
OriginNatural
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI 657443176
Side View
Table 55.0%Crown 38.9°Girdle: THK-VTKPavilion 42.1°CuletDepth 68.6%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 28
Current: €56,450 EUR|Low: €43,299 EUR|High: €56,750 EUR|Avg: €50,376 EUR|-0.5%
MOH London
Retailer 2
October 29, 2026
Retailer 2€43,553 EUR
MOH London€56,450 EUR

8 data points across 2 retailers

2 retailers€43,553 EUR to €56,450 EUR

B+
Cheapest Retailer
-
€43,553 EUR
Most Expensive
B
MOH London
8B6BEBC28 · Oct 29
€56,450 EUR
£49,854 GBP
View
1 more retailer has this diamond
Prices start from €43,553 EURSave up to €12,897 EUR

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

B+
3.50ct Marquise
€43,553 EUR