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Round|Natural|IGI

0.55ct I SI1 Round Natural Diamond

EX • I/SI1 • IGI 839658048

Shape and cutting style on the report: Round brilliant

Certificate IGI 839658048

Diamond specifications and retailer prices

From $646 AUD
As of November 6, 2026
Save $966 AUD (60%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $1,612 AUD at MOH London · As of November 7, 2026
View at MOH London

About this 0.55ct natural round diamond

This 0.55ct natural round sits in the half to three-quarter carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI 839658048. Listed at 14 retailers as of November 6, 2026, with prices from $646 to $1,612, a $966 spread on the same certified stone. MOH London lists it at $1,612. 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

0.55
Carat
I
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishVery Good
SymmetryExcellent
FluorescenceNone
Crown angle35.9°
Pavilion angle41.1°
OriginNatural
Grading LabIGI
CertificateIGI 839658048
Dimensions5.20 × 5.24 × 3.24 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizeNone
Cert comments
IDEAL CUT ROUND BRILLIANT
Top View
5.20 mm5.24 mm0.55 ctI / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryExcellent
FluorescenceNone
CertificateIGI 839658048
Side View
Table 59.0%Crown 35.9°Girdle: MED-STKPavilion 41.1°Culet: NoneDepth 62.1%

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 6
Current: $1,612 AUD|Low: $527 AUD|High: $1,665 AUD|Avg: $967 AUD|-3.2%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
November 7, 2026
Retailer 6$528 AUD
Retailer 4$646 AUD
Retailer 9$755 AUD
Retailer 14$755 AUD
Retailer 7$818 AUD
Retailer 11$886 AUD
Retailer 10$897 AUD
Retailer 8$908 AUD
Retailer 2$978 AUD
Retailer 3$997 AUD
Retailer 12$1,049 AUD
Retailer 5$1,074 AUD
Retailer 13$1,089 AUD
MOH London$1,612 AUD

19 data points across 14 retailers

14 retailers$646 AUD to $1,612 AUD

Retailer 1
-
$528 AUD
Price last confirmed 14 days ago
A
Retailer 2
-
$646 AUD
View
Final sale: no returns
A
Retailer 3
-
$755 AUD
View
A
Retailer 4
-
$755 AUD
View
A
Retailer 5
-
$818 AUD
View
B+
Retailer 6
-
$886 AUD
View
A
Retailer 7
-
$897 AUD
View
A
Retailer 8
-
$908 AUD
View
B+
Retailer 9
-
$978 AUD
View
B+
Retailer 10
-
$997 AUD
View
B+
Retailer 11
-
$1,049 AUD
View
B+
Retailer 12
-
$1,074 AUD
View
B+
Retailer 13
-
$1,089 AUD
View
Most Expensive
B
MOH London
3ECBB47B5 · Nov 7
$1,612 AUD
£872 GBP
View
13 more retailers have this diamond
Prices start from $646 AUDSave up to $966 AUD

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
0.55ct Round
$646 AUD