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3.21ct F SI1 Round Natural Diamond

EX • F/SI1 • GIA 6552541426

Certificate GIA 6552541426

Diamond specifications and retailer prices

From £34,694 GBP
As of November 5, 2026
Save £22,439 GBP (39%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £57,134 GBP at MOH London · As of November 4, 2026
View at MOH London

About this 3.21ct natural round diamond

This 3.21ct natural round sits in the three to five carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6552541426. Listed at 13 retailers as of November 4, 2026, with prices from £34,694 to £57,134, a £22,439 spread on the same certified stone. MOH London lists it at £57,134. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

3.21
Carat
F
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 6552541426
Dimensions9.41 × 9.35 × 5.79 mm
L/W Ratio1.01
Key to symbols
Crystal, Feather, Cloud, Needle
Top View
9.41 mm9.35 mm3.21 ctF / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6552541426
Side View
Table 59.0%CrownGirdle: MED-STKPavilion 40.6°Culet: NoneDepth 61.7%

Caratlytics Score

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

Price History

Last verified: Nov 5
Current: £57,134 GBP|Low: £27,799 GBP|High: £57,977 GBP|Avg: £37,863 GBP|-1.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
November 6, 2026
Retailer 6£27,799 GBP
Retailer 7£29,100 GBP
Retailer 8£30,647 GBP
Retailer 5£33,577 GBP
Retailer 14£34,694 GBP
Retailer 15£35,215 GBP
Retailer 11£36,215 GBP
Retailer 2£36,704 GBP
Retailer 3£38,476 GBP
Retailer 16£38,476 GBP
Retailer 12£38,909 GBP
Retailer 4£39,754 GBP
Retailer 10£41,153 GBP
Retailer 9£43,153 GBP
Retailer 13£43,398 GBP
MOH London£57,134 GBP

31 data points across 16 retailers

13 retailers£34,694 GBP to £57,134 GBP

B+
Cheapest Retailer
-
£34,694 GBP
B+
Retailer 2
-
£35,215 GBP
View
B+
Retailer 3
-
£36,215 GBP
View
B+
Retailer 4
-
£36,704 GBP
View
Retailer 5
-
£38,209 GBP
View
Price last confirmed 29 days ago
B+
Retailer 6
-
£38,476 GBP
View
B+
Retailer 7
-
£38,476 GBP
View
B+
Retailer 8
-
£38,909 GBP
View
B+
Retailer 9
-
£39,754 GBP
View
B
Retailer 10
-
£41,153 GBP
View
B+
Retailer 11
-
£43,153 GBP
View
B
Retailer 12
-
£43,398 GBP
View
Most Expensive
B
MOH London
DDC2A3EC9 · Nov 4
£57,134 GBP
View
12 more retailers have this diamond
Prices start from £34,694 GBPSave up to £22,439 GBP

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+
3.21ct Round
£34,694 GBP