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Heart|Lab Grown|IGI

1.03ct I SI1 Heart Lab Grown Diamond

ID • I/SI1 • IGI LG436045977

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG436045977

Diamond specifications and retailer prices

From $872 CAD
As of November 6, 2026
Save $4,789 CAD (85%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $5,661 CAD at MOH London · As of November 3, 2026
View at MOH London

About this 1.03ct lab-grown heart diamond

This 1.03ct lab-grown heart sits in the classic one-carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG436045977 or 436045977. Listed at 10 retailers as of November 3, 2026, with prices from $872 to $5,661, a $4,789 spread on the same certified stone. MOH London lists it at $5,661. 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

1.03
Carat
I
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle37.6°
Pavilion angle42.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG436045977
Dimensions5.90 × 7.28 × 4.12 mm
L/W Ratio1.23
Girdle conditionFaceted
Culet sizePointed
Top View
5.90 mm7.28 mm1.03 ctI / SI1
OriginLab Grown
CutIdeal
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateIGI LG436045977
Side View
Table 57.5%Crown 37.6°Girdle: THN-THKPavilion 42.6°Culet: NoneDepth 56.6%

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: $5,661 CAD|Low: $872 CAD|High: $5,736 CAD|Avg: $2,608 CAD|-1.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 1, 2026
Retailer 2$872 CAD
Retailer 3$1,439 CAD
Retailer 4$1,670 CAD
Retailer 6$1,913 CAD
Retailer 8$2,394 CAD
Retailer 5$2,663 CAD
Retailer 7$3,488 CAD
MOH London$5,661 CAD

13 data points across 8 retailers

10 retailers$872 CAD to $5,661 CAD

A
Cheapest Retailer
-
$872 CAD
B+
Retailer 2
-
$1,439 CAD
View
B+
Retailer 3
-
$1,566 CAD
View
B+
Retailer 4
-
$1,670 CAD
View
Retailer 5
-
$1,670 CAD
View
Price last confirmed 25 days ago
B+
Retailer 6
-
$1,913 CAD
View
B
Retailer 7
-
$2,663 CAD
View
B
Retailer 8
-
$3,128 CAD
View
B
Retailer 9
-
$3,488 CAD
View
Most Expensive
B
MOH London
LG436045977 · Nov 3
$5,661 CAD
£3,169 GBP
View
9 more retailers have this diamond
Prices start from $872 CADSave up to $4,789 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
1.03ct Heart
$872 CAD