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 $78,205 SGD
$61,174 USD
As of October 30, 2026
Save $57,293 SGD (42%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $135,498 SGD 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 $78,205 to $135,498, a $57,293 spread on the same certified stone. MOH London lists it at $135,498. 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: Oct 30
Current: $135,498 SGD|Low: $74,748 SGD|High: $136,401 SGD|Avg: $94,695 SGD|+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$74,748 SGD
Retailer 9$76,850 SGD
Retailer 4$78,205 SGD
Retailer 8$86,297 SGD
Retailer 6$93,489 SGD
Retailer 7$97,084 SGD
Retailer 2$101,878 SGD
Retailer 5$110,891 SGD
MOH London$135,498 SGD

28 data points across 9 retailers

10 retailers$78,205 SGD to $135,498 SGD

Retailer 1
-
$74,748 SGD
$58,470 USD
Price last confirmed 13 days ago
A
Retailer 2
-
$78,205 SGD
$61,174 USD
View
A
Retailer 3
-
$86,297 SGD
$67,504 USD
View
B+
Retailer 4
-
$89,893 SGD
$70,317 USD
View
B+
Retailer 5
-
$89,893 SGD
$70,317 USD
View
B+
Retailer 6
-
$93,489 SGD
$73,130 USD
View
B+
Retailer 7
-
$97,084 SGD
$75,942 USD
View
B+
Retailer 8
-
$101,878 SGD
€75,897 EUR
View
Retailer 9
-
$110,891 SGD
£68,301 GBP
View
Price last confirmed 31 days ago
Most Expensive
B
MOH London
43D554DD0 · Oct 29
$135,498 SGD
£83,457 GBP
View
9 more retailers have this diamond
Prices start from $78,205 SGDSave up to $57,293 SGD

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
$78,205 SGD