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0.55ct I SI1 Round Lab Grown Diamond

EX • I/SI1 • IGI LG451055359

Shape and cutting style on the report: Round brilliant

Certificate IGI LG451055359

Diamond specifications and retailer prices

From $411 CAD
$294 USD
As of October 29, 2026
Save $1,643 CAD (80%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $2,055 CAD at MOH London · As of October 29, 2026
View at MOH London

About this 0.55ct lab-grown round diamond

This 0.55ct lab-grown 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 LG451055359 or 451055359. Listed at 11 retailers as of October 29, 2026, with prices from $411 to $2,055, a $1,643 spread on the same certified stone. MOH London lists it at $2,055. 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
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle35.7°
Pavilion angle41.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG451055359
Dimensions5.18 × 5.21 × 3.28 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
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Top View
5.18 mm5.21 mm0.55 ctI / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI LG451055359
Side View
Table 59.0%Crown 35.7°Girdle: MED-STKPavilion 41.4°Culet: NoneDepth 63.0%

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 29
Current: $2,055 CAD|Low: $395 CAD|High: $2,067 CAD|Avg: $876 CAD|-0.5%
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
October 29, 2026
Retailer 7$411 CAD
Retailer 12$460 CAD
Retailer 3$477 CAD
Retailer 8$504 CAD
Retailer 9$509 CAD
Retailer 11$509 CAD
Retailer 4$728 CAD
Retailer 10$836 CAD
Retailer 2$945 CAD
Retailer 5$1,018 CAD
Retailer 6$1,566 CAD
Retailer 13$1,639 CAD
MOH London$2,055 CAD

20 data points across 13 retailers

11 retailers$411 CAD to $2,055 CAD

A
Cheapest Retailer
-
$411 CAD
$294 USD
A
Retailer 2
-
$460 CAD
$329 USD
View
Final sale: no returns
A
Retailer 3
-
$477 CAD
$341 USD
View
B+
Retailer 4
-
$504 CAD
$360 USD
View
B+
Retailer 5
-
$509 CAD
$364 USD
View
B+
Retailer 6
-
$509 CAD
$364 USD
View
B+
Retailer 7
-
$836 CAD
$597 USD
View
B+
Retailer 8
-
$945 CAD
€643 EUR
View
B
Retailer 9
-
$1,566 CAD
$1,119 USD
View
B
Retailer 10
-
$1,639 CAD
$1,171 USD
View
Most Expensive
B
MOH London
LG451055359 · Oct 29
$2,055 CAD
£1,156 GBP
View
10 more retailers have this diamond
Prices start from $411 CADSave up to $1,643 CAD

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
$411 CAD