Heart|Lab Grown|IGI

1.21ct F VS1 Heart Lab Grown Diamond

ID • F/VS1 • IGI LG673419604

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG673419604

Diamond specifications and retailer prices

From $539 USD
As of November 2, 2026
Save $271 USD (33%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: $810 USD at Brilliant Earth · As of November 2, 2026
View at Brilliant Earth

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 LG673419604 or 673419604. Listed at 2 retailers as of November 2, 2026, with prices from $539 to $810, a $271 spread on the same certified stone. Brilliant Earth lists it at $810. 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
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.9°
Pavilion angle40.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG673419604
Dimensions6.58 × 7.30 × 4.38 mm
L/W Ratio1.11
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
6.58 mm7.30 mm1.21 ctF / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG673419604
Side View
Table 60.0%Crown 35.9°Girdle: MED-STKPavilion 40.2°Culet: NoneDepth 60.0%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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Price History

Last verified: Nov 2
Current: $810 USD|Low: $253 USD|High: $2,180 USD|Avg: $807 USD|-40.4%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
September 23, 2026
Retailer 6$254 USD
Retailer 8$300 USD
Retailer 4$358 USD
Retailer 13$446 USD
Retailer 9$475 USD
Retailer 2$539 USD
Retailer 7$605 USD
Retailer 12$706 USD
Brilliant Earth$810 USD
Retailer 3$998 USD
Retailer 11$1,041 USD
Retailer 10$1,181 USD
Retailer 5$2,020 USD

39 data points across 13 retailers

2 retailers$539 USD to $810 USD

B+
Cheapest Retailer
-
$539 USD
Most Expensive
B
Brilliant Earth
15257862Y · Nov 2
$810 USD
View
1 more retailer has this diamond
Prices start from $539 USDSave up to $271 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.

B+
1.21ct Heart
$539 USD