CaratHunter
Plans
Round|Natural|IGI

5.09ct I SI2 Round Natural Diamond

EX • I/SI2 • IGI 586341414

Shape and cutting style on the report: Round brilliant

Certificate IGI 586341414

Diamond specifications and retailer prices

From $103,743 NZD
$58,470 USD
As of November 1, 2026
Save $83,315 NZD (45%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $187,058 NZD at MOH London · As of November 1, 2026
View at MOH London

About this 5.09ct natural round diamond

This 5.09ct natural round sits in the over five carat band, graded I colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI 586341414. Listed at 10 retailers as of November 1, 2026, with prices from $103,743 to $187,058, a $83,315 spread on the same certified stone. MOH London lists it at $187,058. 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

5.09
Carat
I
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.1°
Pavilion angle40.8°
OriginNatural
Grading LabIGI
CertificateIGI 586341414
Dimensions11.15 × 11.11 × 6.71 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
IDEAL CUT ROUND BRILLIANT
Top View
11.15 mm11.11 mm5.09 ctI / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 586341414
Side View
Table 59.0%Crown 34.1°Girdle: MediumPavilion 40.8°Culet: NoneDepth 60.3%

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 1
Current: $187,058 NZD|Low: $103,743 NZD|High: $189,312 NZD|Avg: $131,686 NZD|-0.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 1, 2026
Retailer 3$103,743 NZD
Retailer 9$106,660 NZD
Retailer 4$108,541 NZD
Retailer 8$119,772 NZD
Retailer 6$129,755 NZD
Retailer 7$134,744 NZD
Retailer 2$140,404 NZD
Retailer 5$153,906 NZD
MOH London$187,058 NZD

28 data points across 9 retailers

10 retailers$103,743 NZD to $187,058 NZD

A
Cheapest Retailer
-
$103,743 NZD
$58,470 USD
A
Retailer 2
-
$108,541 NZD
$61,174 USD
View
B+
Retailer 3
-
$119,772 NZD
$67,504 USD
View
B+
Retailer 4
-
$124,763 NZD
$70,317 USD
View
B+
Retailer 5
-
$124,763 NZD
$70,317 USD
View
B+
Retailer 6
-
$129,755 NZD
$73,130 USD
View
B+
Retailer 7
-
$134,744 NZD
$75,942 USD
View
B+
Retailer 8
-
$140,404 NZD
€75,364 EUR
View
Retailer 9
-
$153,906 NZD
£68,301 GBP
View
Price last confirmed 33 days ago
Most Expensive
B
MOH London
43D554DD0 · Nov 1
$187,058 NZD
£83,013 GBP
View
9 more retailers have this diamond
Prices start from $103,743 NZDSave up to $83,315 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
5.09ct Round
$103,743 NZD