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4.56ct K SI1 Round Natural Diamond

EX • K/SI1 • IGI 588362937

Shape and cutting style on the report: Round brilliant

Certificate IGI 588362937

Diamond specifications and retailer prices

From $45,273 NZD
As of November 4, 2026
Save $27,950 NZD (38%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $73,223 NZD at MOH London · As of November 4, 2026
View at MOH London

About this 4.56ct natural round diamond

This 4.56ct 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 588362937. Listed at 16 retailers as of November 4, 2026, with prices from $45,273 to $73,223, a $27,950 spread on the same certified stone. MOH London lists it at $73,223. 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

4.56
Carat
K
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle36.4°
Pavilion angle40.2°
OriginNatural
Grading LabIGI
CertificateIGI 588362937
Dimensions10.44 × 10.36 × 6.61 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Top View
10.44 mm10.36 mm4.56 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateIGI 588362937
Side View
Table 56.0%Crown 36.4°Girdle: MED-STKPavilion 40.2°Culet: NoneDepth 63.4%

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 4
Current: $73,223 NZD|Low: $45,273 NZD|High: $74,305 NZD|Avg: $54,651 NZD|-1.2%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 7$45,273 NZD
Retailer 6$47,728 NZD
Retailer 5$48,566 NZD
Retailer 11$48,970 NZD
Retailer 9$51,891 NZD
Retailer 8$54,486 NZD
Retailer 10$56,215 NZD
Retailer 4$56,597 NZD
Retailer 3$58,378 NZD
Retailer 2$58,503 NZD
MOH London$73,223 NZD

36 data points across 11 retailers

16 retailers$45,273 NZD to $73,223 NZD

A
Cheapest Retailer
-
$45,273 NZD
A
Retailer 2
-
$46,684 NZD
View
A
Retailer 3
-
$47,244 NZD
View
A
Retailer 4
-
$47,728 NZD
View
A
Retailer 5
-
$48,566 NZD
View
A
Retailer 6
-
$48,970 NZD
View
A
Retailer 7
-
$50,450 NZD
View
Retailer 8
-
$51,891 NZD
View
Price last confirmed 21 days ago
B+
Retailer 9
-
$54,454 NZD
View
B+
Retailer 10
-
$54,486 NZD
View
B+
Retailer 11
-
$56,215 NZD
View
A
Retailer 12
-
$56,597 NZD
View
B+
Retailer 13
-
$57,747 NZD
View
B+
Retailer 14
-
$58,378 NZD
View
A
Retailer 15
-
$58,503 NZD
View
Most Expensive
B+
MOH London
D94B529EA · Nov 4
$73,223 NZD
£32,411 GBP
View
15 more retailers have this diamond
Prices start from $45,273 NZDSave up to $27,950 NZD

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
4.56ct Round
$45,273 NZD