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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 HK$479,953 HKD
$61,174 USD
As of October 30, 2026
Save HK$347,192 HKD (42%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: HK$827,145 HKD 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 October 30, 2026, with prices from HK$479,953 to HK$827,145, a HK$347,192 spread on the same certified stone. MOH London lists it at HK$827,145. 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: HK$827,145 HKD|Low: HK$458,738 HKD|High: HK$837,109 HKD|Avg: HK$582,295 HKD|-0.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 1, 2026
Retailer 3HK$458,738 HKD
Retailer 9HK$471,636 HKD
Retailer 4HK$479,953 HKD
Retailer 8HK$529,616 HKD
Retailer 6HK$573,756 HKD
Retailer 7HK$595,818 HKD
Retailer 2HK$620,848 HKD
Retailer 5HK$680,549 HKD
MOH LondonHK$827,145 HKD

28 data points across 9 retailers

10 retailersHK$479,953 HKD to HK$827,145 HKD

Retailer 1
-
HK$458,738 HKD
$58,470 USD
Price last confirmed 14 days ago
A
Retailer 2
-
HK$479,953 HKD
$61,174 USD
View
B+
Retailer 3
-
HK$529,616 HKD
$67,504 USD
View
B+
Retailer 4
-
HK$551,686 HKD
$70,317 USD
View
B+
Retailer 5
-
HK$551,686 HKD
$70,317 USD
View
B+
Retailer 6
-
HK$573,756 HKD
$73,130 USD
View
B+
Retailer 7
-
HK$595,818 HKD
$75,942 USD
View
B+
Retailer 8
-
HK$620,848 HKD
€75,364 EUR
View
Retailer 9
-
HK$680,549 HKD
£68,301 GBP
View
Price last confirmed 32 days ago
Most Expensive
B
MOH London
43D554DD0 · Nov 1
HK$827,145 HKD
£83,013 GBP
View
9 more retailers have this diamond
Prices start from HK$479,953 HKDSave up to HK$347,192 HKD

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
HK$479,953 HKD