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Round|Natural|GIA

4.02ct K SI1 Round Natural Diamond

EX • K/SI1 • GIA 5222151906

Certificate GIA 5222151906

Diamond specifications and retailer prices

From £28,137 GBP
As of November 1, 2026
Save £22,045 GBP (44%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £50,182 GBP at MOH London · As of November 4, 2026
View at MOH London

About this 4.02ct natural round diamond

This 4.02ct natural round sits in the three to five carat band, graded K colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 5222151906. Listed at 14 retailers as of November 1, 2026, with prices from £28,137 to £50,182, a £22,045 spread on the same certified stone. MOH London lists it at £50,182. 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

4.02
Carat
K
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34°
Pavilion angle41.8°
OriginNatural
Grading LabGIA
CertificateGIA 5222151906
Dimensions10.18 × 10.11 × 6.34 mm
L/W Ratio1.01
Star length50%
Lower girdle75%
Top View
10.18 mm10.11 mm4.02 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 5222151906
Side View
Table 58.0%Crown 34°Girdle: MED-STKPavilion 41.8°Culet: NoneDepth 62.5%

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 1
Current: £50,182 GBP|Low: £28,137 GBP|High: £50,924 GBP|Avg: £35,486 GBP|-0.3%
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
November 6, 2026
Retailer 8£28,137 GBP
Retailer 10£29,198 GBP
Retailer 6£31,910 GBP
Retailer 13£32,264 GBP
Retailer 9£32,486 GBP
Retailer 5£33,561 GBP
Retailer 12£33,561 GBP
Retailer 11£33,896 GBP
Retailer 3£34,903 GBP
Retailer 4£36,245 GBP
Retailer 7£38,838 GBP
Retailer 2£40,095 GBP
MOH London£50,182 GBP

42 data points across 13 retailers

14 retailers£28,137 GBP to £50,182 GBP

B+
Cheapest Retailer
-
£28,137 GBP
B+
Retailer 2
-
£29,198 GBP
View
B+
Retailer 3
-
£31,232 GBP
View
B+
Retailer 4
-
£31,910 GBP
View
Retailer 5
-
£32,218 GBP
View
Price last confirmed 8 days ago
B+
Retailer 6
-
£32,264 GBP
View
Retailer 7
-
£32,486 GBP
View
Price last confirmed 8 days ago
B
Retailer 8
-
£33,561 GBP
View
B
Retailer 9
-
£33,561 GBP
View
B
Retailer 10
-
£34,903 GBP
View
B
Retailer 11
-
£36,245 GBP
View
B
Retailer 12
-
£38,838 GBP
View
B
Retailer 13
-
£40,095 GBP
View
Most Expensive
B
MOH London
2E1DA9314 · Nov 4
£50,182 GBP
View
13 more retailers have this diamond
Prices start from £28,137 GBPSave up to £22,045 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+
4.02ct Round
£28,137 GBP