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Round|Natural|IGI

4.01ct K SI1 Round Natural Diamond

EX • K/SI1 • IGI 773617829

Shape and cutting style on the report: Round brilliant

Certificate IGI 773617829

Diamond specifications and retailer prices

From £15,696 GBP
As of November 4, 2026
9 retailers carry this diamond
Most expensive: £19,816 GBP at NZ Jewellers · As of October 14, 2026
View at NZ Jewellers

About this 4.01ct natural round diamond

This 4.01ct 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 IGI 773617829. Listed at 9 retailers as of November 4, 2026. 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

4.01
Carat
K
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.6°
Pavilion angle41.1°
OriginNatural
Grading LabIGI
CertificateIGI 773617829
Dimensions10.03 × 10.09 × 6.37 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Top View
10.03 mm10.09 mm4.01 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 773617829
Side View
Table 57.0%Crown 36.6°Girdle: MED-STKPavilion 41.1°Culet: NoneDepth 63.3%

Caratlytics Score

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B+
Very Good
Strong quality and value balance
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Price History

Last verified: Nov 4
Current: £19,816 GBP|Low: £13,047 GBP|High: £23,337 GBP|Avg: £17,336 GBP|-6.4%
NZ Jewellers
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
November 4, 2026
Retailer 14£14,194 GBP
Retailer 8£14,691 GBP
Retailer 9£14,942 GBP
Retailer 3£15,068 GBP
Retailer 4£15,440 GBP
Retailer 2£15,696 GBP
Retailer 7£16,727 GBP
Retailer 6£16,766 GBP
Retailer 12£16,885 GBP
Retailer 5£17,168 GBP
Retailer 11£17,325 GBP
Retailer 10£17,370 GBP
NZ Jewellers£19,816 GBP
Retailer 13£22,109 GBP

23 data points across 14 retailers

9 retailers

Retailer 1
-
£14,194 GBP
Price last confirmed 25 days ago
Retailer 2
-
£14,942 GBP
View
Price last confirmed 23 days ago
Retailer 3
-
£15,440 GBP
View
Price last confirmed 25 days ago
B+
Retailer 4
-
£15,696 GBP
View
Retailer 5
-
£16,727 GBP
View
Price last confirmed 23 days ago
Retailer 6
-
£16,766 GBP
View
Price last confirmed 38 days ago
Retailer 7
-
£17,325 GBP
View
Price last confirmed 25 days ago
Retailer 8
-
£17,370 GBP
View
Price last confirmed 24 days ago
Most Expensive
NZ Jewellers
122347a2-3bb6-4b62-8829-e59d14d176d4 · Oct 14
£19,816 GBP
$26,671 USD
View
Price last confirmed 23 days ago
8 more retailers have this diamond
Prices start from £15,696 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+
4.01ct Round
£15,696 GBP