Cushion|Lab Grown|IGI

1.21ct E FL Cushion Lab Grown Diamond

ID • E/FL • IGI LG840632427

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG840632427

Diamond specifications and retailer prices

From $431 USD
As of October 28, 2026
Save $2,129 USD (83%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $2,560 USD at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

About this 1.21ct lab-grown cushion diamond

This 1.21ct lab-grown cushion sits in the classic one-carat band, graded E colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG840632427 or 840632427. Listed at 15 retailers as of October 28, 2026, with prices from $431 to $2,560, a $2,129 spread on the same certified stone. Brilliant Earth lists it at $2,560. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.21
Carat
E
Color
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.1°
Pavilion angle35°
OriginLab Grown
Grading LabIGI
CertificateIGI LG840632427
Dimensions7.60 × 5.33 × 3.64 mm
L/W Ratio1.43
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
7.60 mm5.33 mm1.21 ctE / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG840632427
Side View
Table 60.0%Crown 35.1°Girdle: STK-THKPavilion 35°Culet: NoneDepth 68.3%

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: $2,560 USD|Low: $431 USD|High: $2,560 USD|Avg: $1,241 USD
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
Retailer 14
Retailer 15
October 29, 2026
Retailer 14$431 USD
Retailer 9$507 USD
Retailer 3$709 USD
Retailer 11$720 USD
Retailer 4$759 USD
Retailer 8$769 USD
Retailer 10$819 USD
Retailer 13$833 USD
Retailer 2$861 USD
Retailer 5$1,518 USD
Retailer 6$1,535 USD
Retailer 15$1,570 USD
Retailer 12$1,866 USD
Retailer 7$2,213 USD
Brilliant Earth$2,560 USD

16 data points across 15 retailers

15 retailers$431 USD to $2,560 USD

A
Cheapest Retailer
-
$431 USD
Final sale: no returns
A
Retailer 2
-
$507 USD
£399 GBP
View
A
Retailer 3
-
$709 USD
View
A
Retailer 4
-
$720 USD
View
A
Retailer 5
-
$759 USD
View
A
Retailer 6
-
$769 USD
€732 EUR
View
A
Retailer 7
-
$819 USD
ZAR 13,235 ZAR
View
A
Retailer 8
-
$833 USD
View
A
Retailer 9
-
$861 USD
£678 GBP
View
B+
Retailer 10
-
$1,518 USD
SGD 2,051 SGD
View
B+
Retailer 11
-
$1,535 USD
View
Price last confirmed 14 days ago
B+
Retailer 12
-
$1,570 USD
View
B+
Retailer 13
-
$1,866 USD
£1,469 GBP
View
B
Retailer 14
-
$2,213 USD
View
Most Expensive
B
Brilliant Earth
21826974A · Oct 29
$2,560 USD
View
14 more retailers have this diamond
Prices start from $431 USDSave up to $2,129 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 Cushion
$431 USD