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Heart|Lab Grown|IGI

1.00ct D SI1 Heart Lab Grown Diamond

ID • D/SI1 • IGI LG850681377

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG850681377

Diamond specifications and retailer prices

From $432 CAD
£242 GBP
As of October 28, 2026
Save $748 CAD (63%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: $1,179 CAD at MOH London · As of October 26, 2026
View at MOH London

About this 1ct lab-grown heart diamond

This 1ct lab-grown heart sits in the classic one-carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG850681377 or 850681377. Listed at 7 retailers as of October 26, 2026, with prices from $432 to $1,179, a $748 spread on the same certified stone. MOH London lists it at $1,179. 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

1.00
Carat
D
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.3°
Pavilion angle39.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG850681377
Dimensions6.80 × 5.97 × 4.03 mm
L/W Ratio1.14
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
6.80 mm5.97 mm1.00 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG850681377
Side View
Table 63.0%Crown 37.3°Girdle: MED-STKPavilion 39.1°Culet: NoneDepth 59.3%

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 28
Current: $1,179 CAD|Low: $420 CAD|High: $1,179 CAD|Avg: $625 CAD
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
October 29, 2026
Retailer 4$432 CAD
Retailer 2$434 CAD
Retailer 5$441 CAD
Retailer 7$468 CAD
Retailer 3$479 CAD
Retailer 6$888 CAD
MOH London$1,179 CAD

5 data points across 7 retailers

7 retailers$432 CAD to $1,179 CAD

A
Cheapest Retailer
-
$432 CAD
£242 GBP
A
Retailer 2
-
$434 CAD
€294 EUR
View
A
Retailer 3
-
$441 CAD
$314 USD
View
B+
Retailer 4
-
$468 CAD
$333 USD
View
B+
Retailer 5
-
$479 CAD
£268 GBP
View
B
Retailer 6
-
$888 CAD
$632 USD
View
Most Expensive
B
MOH London
LG850681377 · Oct 26
$1,179 CAD
£661 GBP
View
6 more retailers have this diamond
Prices start from $432 CADSave up to $748 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
1.00ct Heart
$432 CAD