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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 $688 SGD
As of November 4, 2026
Save $346 SGD (33%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: $1,035 SGD at Brilliant Earth · As of November 4, 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 4, 2026, with prices from $688 to $1,035, a $346 spread on the same certified stone. Brilliant Earth lists it at $1,035. 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
Colour
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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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 4
Current: $1,035 SGD|Low: $323 SGD|High: $2,785 SGD|Avg: $1,031 SGD|-40.4%
Brilliant Earth
Retailer 2
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Retailer 8
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Retailer 13
September 23, 2026
Retailer 6$324 SGD
Retailer 8$383 SGD
Retailer 4$457 SGD
Retailer 13$570 SGD
Retailer 9$605 SGD
Retailer 2$688 SGD
Retailer 7$773 SGD
Retailer 12$902 SGD
Brilliant Earth$1,035 SGD
Retailer 3$1,273 SGD
Retailer 11$1,330 SGD
Retailer 10$1,508 SGD
Retailer 5$2,580 SGD

39 data points across 13 retailers

2 retailers$688 SGD to $1,035 SGD

B+
Cheapest Retailer
-
$688 SGD
Most Expensive
B
Brilliant Earth
15257862Y · Nov 4
$1,035 SGD
$810 USD
View
1 more retailer has this diamond
Prices start from $688 SGDSave up to $346 SGD

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
$688 SGD