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Heart|Lab Grown|IGI

1.21ct F VS1 Heart Lab Grown Diamond

EX • F/VS1 • IGI LG607340663

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG607340663

Diamond specifications and retailer prices

From $395 USD
As of November 4, 2026
Save $644 USD (62%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: $1,039 USD at MOH London · As of November 5, 2026
View at MOH London

About this 1.21ct lab-grown heart diamond

This 1.21ct lab-grown heart sits in the classic one-carat band, graded F colour (colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG607340663 or 607340663. Listed at 7 retailers as of November 4, 2026, with prices from $395 to $1,039, a $644 spread on the same certified stone. MOH London lists it at $1,039. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.21
Carat
F
Color
VS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.4°
Pavilion angle40.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG607340663
Dimensions6.37 × 7.51 × 4.41 mm
L/W Ratio1.18
Girdle conditionFaceted
Culet sizePointed
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
6.37 mm7.51 mm1.21 ctF / VS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG607340663
Side View
Table 58.0%Crown 36.4°Girdle: MED-STKPavilion 40.4°Culet: NoneDepth 58.7%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 4
Current: $1,039 USD|Low: $372 USD|High: $1,069 USD|Avg: $586 USD|-2.9%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 5, 2026
Retailer 6$395 USD
Retailer 2$397 USD
Retailer 3$433 USD
Retailer 5$470 USD
Retailer 4$770 USD
MOH London$1,039 USD

43 data points across 6 retailers

7 retailers$395 USD to $1,039 USD

A
Cheapest Retailer
-
$395 USD
A
Retailer 2
-
$397 USD
View
B+
Retailer 3
-
$433 USD
View
B+
Retailer 4
-
$470 USD
View
B
Retailer 5
-
$671 USD
View
B
Retailer 6
-
$770 USD
View
Most Expensive
B
MOH London
LG607340663 · Nov 5
$1,039 USD
£818 GBP
View
6 more retailers have this diamond
Prices start from $395 USDSave up to $644 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
1.21ct Heart
$395 USD