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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 $61,174 USD
As of October 30, 2026
Save $44,816 USD (42%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $105,990 USD 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 $61,174 to $105,990, a $44,816 spread on the same certified stone. MOH London lists it at $105,990. 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: $105,990 USD|Low: $58,470 USD|High: $106,697 USD|Avg: $74,073 USD|+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$58,470 USD
Retailer 9$60,114 USD
Retailer 4$61,174 USD
Retailer 8$67,504 USD
Retailer 6$73,130 USD
Retailer 7$75,942 USD
Retailer 2$79,692 USD
Retailer 5$86,742 USD
MOH London$105,990 USD

28 data points across 9 retailers

10 retailers$61,174 USD to $105,990 USD

Retailer 1
-
$58,470 USD
Price last confirmed 12 days ago
A
Retailer 2
-
$61,174 USD
View
A
Retailer 3
-
$67,504 USD
View
B+
Retailer 4
-
$70,317 USD
View
B+
Retailer 5
-
$70,317 USD
View
B+
Retailer 6
-
$73,130 USD
View
B+
Retailer 7
-
$75,942 USD
View
B+
Retailer 8
-
$79,692 USD
€75,897 EUR
View
Retailer 9
-
$86,742 USD
£68,301 GBP
View
Price last confirmed 30 days ago
Most Expensive
B
MOH London
43D554DD0 · Oct 29
$105,990 USD
£83,457 GBP
View
9 more retailers have this diamond
Prices start from $61,174 USDSave up to $44,816 USD

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
$61,174 USD