Heart|Lab Grown|IGI

1.21ct F VS1 Heart Lab Grown Diamond

VG • F/VS1 • IGI LG840639927

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG840639927

Diamond specifications and retailer prices

From $229 USD
As of October 28, 2026
Save $900 USD (80%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $1,129 USD at Reve Diamonds · As of October 28, 2026
View at Reve Diamonds

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 very-good cut grade and certified by IGI LG840639927 or 840639927. Listed at 13 retailers as of October 28, 2026, with prices from $229 to $1,129, a $900 spread on the same certified stone. Reve Diamonds lists it at $1,129. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.21
Carat
F
Color
VS1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.5°
Pavilion angle40.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG840639927
Dimensions6.38 × 7.41 × 4.50 mm
L/W Ratio1.16
Girdle conditionFaceted
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
6.38 mm7.41 mm1.21 ctF / VS1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG840639927
Side View
Table 59.0%Crown 34.5°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 60.7%

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: Oct 28
Current: $1,048 USD|Low: $229 USD|High: $1,129 USD|Avg: $608 USD|-0.4%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Reve Diamonds
October 29, 2026
Retailer 3$229 USD
Retailer 5$268 USD
Retailer 7$383 USD
Retailer 12$395 USD
Retailer 6$399 USD
Retailer 11$433 USD
Retailer 8$544 USD
Retailer 9$665 USD
Retailer 10$757 USD
Retailer 4$771 USD
Retailer 2$900 USD
Retailer 1$1,048 USD
Reve Diamonds$1,129 USD

24 data points across 13 retailers

13 retailers$229 USD to $1,129 USD

A
Cheapest Retailer
-
$229 USD
Final sale: no returns
A
Retailer 2
-
$268 USD
£211 GBP
View
A
Retailer 3
-
$383 USD
ZAR 6,184 ZAR
View
A
Retailer 4
-
$395 USD
View
A
Retailer 5
-
$399 USD
£314 GBP
View
B+
Retailer 6
-
$433 USD
View
B+
Retailer 7
-
$544 USD
A$837 AUD
View
B
Retailer 8
-
$665 USD
A$1,023 AUD
View
B
Retailer 9
-
$757 USD
View
B
Retailer 10
-
$771 USD
View
B
Retailer 11
-
$900 USD
View
B
Retailer 12
-
$1,048 USD
£825 GBP
View
Most Expensive
B
Reve Diamonds
94D26CB67 · Oct 28
$1,129 USD
View
12 more retailers have this diamond
Prices start from $229 USDSave up to $900 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
$229 USD