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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 $85,454 CAD
$61,174 USD
As of October 30, 2026
Save $62,604 CAD (42%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $148,058 CAD at MOH London · As of October 29, 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 October 29, 2026, with prices from $85,454 to $148,058, a $62,604 spread on the same certified stone. MOH London lists it at $148,058. 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
Color
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: Oct 30
Current: $148,058 CAD|Low: $81,677 CAD|High: $149,044 CAD|Avg: $103,279 CAD|+0.4%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
October 29, 2026
Retailer 3$81,677 CAD
Retailer 9$83,973 CAD
Retailer 4$85,454 CAD
Retailer 8$94,296 CAD
Retailer 6$102,155 CAD
Retailer 7$106,083 CAD
Retailer 2$111,322 CAD
Retailer 5$121,169 CAD
MOH London$148,058 CAD

29 data points across 9 retailers

10 retailers$85,454 CAD to $148,058 CAD

Retailer 1
-
$81,677 CAD
$58,470 USD
Price last confirmed 12 days ago
A
Retailer 2
-
$85,454 CAD
$61,174 USD
View
A
Retailer 3
-
$94,296 CAD
$67,504 USD
View
B+
Retailer 4
-
$98,226 CAD
$70,317 USD
View
B+
Retailer 5
-
$98,226 CAD
$70,317 USD
View
B+
Retailer 6
-
$102,155 CAD
$73,130 USD
View
B+
Retailer 7
-
$106,083 CAD
$75,942 USD
View
B+
Retailer 8
-
$111,322 CAD
€75,897 EUR
View
Retailer 9
-
$121,169 CAD
£68,301 GBP
View
Price last confirmed 30 days ago
Most Expensive
B
MOH London
43D554DD0 · Oct 29
$148,058 CAD
£83,457 GBP
View
9 more retailers have this diamond
Prices start from $85,454 CADSave up to $62,604 CAD

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
$85,454 CAD