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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 $444 USD
As of November 6, 2026
Save $663 USD (60%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $1,107 USD 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 $444 to $1,107, a $663 spread on the same certified stone. MOH London lists it at $1,107. 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
Color
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: $1,107 USD|Low: $362 USD|High: $1,144 USD|Avg: $664 USD|-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$363 USD
Retailer 4$444 USD
Retailer 9$519 USD
Retailer 14$519 USD
Retailer 7$562 USD
Retailer 11$609 USD
Retailer 10$616 USD
Retailer 8$624 USD
Retailer 2$672 USD
Retailer 3$685 USD
Retailer 12$721 USD
Retailer 5$738 USD
Retailer 13$748 USD
MOH London$1,107 USD

19 data points across 14 retailers

14 retailers$444 USD to $1,107 USD

Retailer 1
-
$363 USD
Price last confirmed 14 days ago
A
Retailer 2
-
$444 USD
View
Final sale: no returns
A
Retailer 3
-
$519 USD
View
A
Retailer 4
-
$519 USD
View
A
Retailer 5
-
$562 USD
View
B+
Retailer 6
-
$609 USD
View
A
Retailer 7
-
$616 USD
View
A
Retailer 8
-
$624 USD
View
B+
Retailer 9
-
$672 USD
View
B+
Retailer 10
-
$685 USD
View
B+
Retailer 11
-
$721 USD
View
B+
Retailer 12
-
$738 USD
View
B+
Retailer 13
-
$748 USD
View
Most Expensive
B
MOH London
3ECBB47B5 · Nov 7
$1,107 USD
£872 GBP
View
13 more retailers have this diamond
Prices start from $444 USDSave up to $663 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
0.55ct Round
$444 USD