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Heart|Lab Grown|IGI

0.51ct E SI1 Heart Lab Grown Diamond

ID • E/SI1 • IGI LG821663650

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG821663650

Diamond specifications and retailer prices

From $210 CAD
$150 USD
As of October 28, 2026
Save $1,013 CAD (83%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: $1,223 CAD at MOH London · As of October 25, 2026
View at MOH London

About this 0.51ct lab-grown heart diamond

This 0.51ct lab-grown heart sits in the half to three-quarter carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG821663650 or 821663650. Listed at 5 retailers as of October 25, 2026, with prices from $210 to $1,223, a $1,013 spread on the same certified stone. MOH London lists it at $1,223. 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

0.51
Carat
E
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle35.6°
Pavilion angle40.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG821663650
Dimensions5.54 × 4.96 × 3.23 mm
L/W Ratio1.12
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
5.54 mm4.96 mm0.51 ctE / SI1
OriginLab Grown
CutIdeal
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateIGI LG821663650
Side View
Table 61.0%Crown 35.6°Girdle: MED-STKPavilion 40.4°CuletDepth 58.3%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 28
Current: $1,223 CAD|Low: $210 CAD|High: $1,257 CAD|Avg: $547 CAD|-1.6%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
October 29, 2026
Retailer 5$210 CAD
Retailer 2$316 CAD
Retailer 3$401 CAD
Retailer 4$617 CAD
MOH London$1,223 CAD

39 data points across 5 retailers

5 retailers$210 CAD to $1,223 CAD

B+
Cheapest Retailer
-
$210 CAD
$150 USD
B+
Retailer 2
-
$316 CAD
£178 GBP
View
B+
Retailer 3
-
$401 CAD
£226 GBP
View
B
Retailer 4
-
$617 CAD
$441 USD
View
Most Expensive
B
MOH London
LG821663650 · Oct 25
$1,223 CAD
£688 GBP
View
4 more retailers have this diamond
Prices start from $210 CADSave up to $1,013 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.

B+
0.51ct Heart
$210 CAD