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4.02ct K SI1 Round Natural Diamond

EX • K/SI1 • IGI 843671487

Shape and cutting style on the report: Round brilliant

Certificate IGI 843671487

Diamond specifications and retailer prices

From $27,847 AUD
As of November 5, 2026
Save $19,881 AUD (42%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $47,728 AUD 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 IGI 843671487. Listed at 15 retailers as of November 4, 2026, with prices from $27,847 to $47,728, a $19,881 spread on the same certified stone. MOH London lists it at $47,728. 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 angle36.5°
Pavilion angle41°
OriginNatural
Grading LabIGI
CertificateIGI 843671487
Dimensions10.08 × 10.14 × 6.34 mm
L/W Ratio1.01
Girdle conditionFaceted
Top View
10.08 mm10.14 mm4.02 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 843671487
Side View
Table 57.0%Crown 36.5°Girdle: MED-STKPavilion 41°Culet: NoneDepth 62.7%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: $47,728 AUD|Low: $27,847 AUD|High: $48,368 AUD|Avg: $35,862 AUD|-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
November 6, 2026
Retailer 9$27,847 AUD
Retailer 6$31,094 AUD
Retailer 8$31,318 AUD
Retailer 2$31,680 AUD
Retailer 5$32,955 AUD
Retailer 13$33,824 AUD
Retailer 12$35,515 AUD
Retailer 11$36,642 AUD
Retailer 10$36,938 AUD
Retailer 4$37,622 AUD
Retailer 3$38,051 AUD
Retailer 7$38,132 AUD
Retailer 14$43,411 AUD
MOH London$47,728 AUD

26 data points across 14 retailers

15 retailers$27,847 AUD to $47,728 AUD

A
Cheapest Retailer
-
$27,847 AUD
A
Retailer 2
-
$31,094 AUD
View
A
Retailer 3
-
$31,318 AUD
View
A
Retailer 4
-
$31,680 AUD
View
A
Retailer 5
-
$32,955 AUD
View
A
Retailer 6
-
$33,024 AUD
View
Retailer 7
-
$33,824 AUD
View
Price last confirmed 8 days ago
A
Retailer 8
-
$35,515 AUD
View
A
Retailer 9
-
$36,642 AUD
View
A
Retailer 10
-
$36,938 AUD
View
B+
Retailer 11
-
$37,622 AUD
View
B+
Retailer 12
-
$38,051 AUD
View
A
Retailer 13
-
$38,132 AUD
View
B+
Retailer 14
-
$43,411 AUD
View
Most Expensive
B+
MOH London
5549054B1 · Nov 4
$47,728 AUD
£26,308 GBP
View
14 more retailers have this diamond
Prices start from $27,847 AUDSave up to $19,881 AUD

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.

A
4.02ct Round
$27,847 AUD