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Cushion|Lab Grown|IGI

1.21ct F IF Cushion Lab Grown Diamond

EX • F/IF • IGI LG655426099

Shape and cutting style on the report: Cushion brilliant

Certificate IGI LG655426099

Diamond specifications and retailer prices

From $224 USD
As of November 4, 2026
Save $1,256 USD (85%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $2,184 USD at Queensmith · As of October 27, 2026
View at Queensmith

About this 1.21ct lab-grown cushion diamond

This 1.21ct lab-grown cushion sits in the classic one-carat band, graded F colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG655426099 or 655426099. Listed at 21 retailers as of November 4, 2026, with a 561% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.2°
Pavilion angle36.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG655426099
Dimensions7.13 × 5.77 × 3.77 mm
L/W Ratio1.24
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
7.13 mm5.77 mm1.21 ctF / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG655426099
Side View
Table 60.0%Crown 34.2°Girdle: MED-STKPavilion 36.6°Culet: NoneDepth 65.3%

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: Nov 4
Current: $452 USD|Low: $224 USD|High: $2,080 USD|Avg: $751 USD|-0.7%
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Retailer 19
November 5, 2026
Retailer 9$224 USD
Retailer 3$249 USD
Retailer 19$281 USD
Retailer 5$342 USD
Retailer 15$421 USD
Retailer 14$430 USD
Retailer 1$452 USD
Retailer 4$494 USD
Retailer 13$607 USD
Retailer 2$617 USD
Retailer 7$791 USD
Retailer 10$814 USD
Retailer 11$846 USD
Retailer 8$854 USD
Retailer 17$1,036 USD
Retailer 12$1,162 USD
Retailer 6$1,196 USD
Retailer 18$1,300 USD
Retailer 16$1,480 USD

41 data points across 19 retailers

21 retailers$224 USD to $1,480 USD

A
Cheapest Retailer
-
$224 USD
Final sale: no returns
Retailer 2
-
$249 USD
View
Price last confirmed 11 days ago
A
Retailer 3
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$281 USD
View
B+
Retailer 4
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$342 USD
View
A
Retailer 5
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$421 USD
View
A
Retailer 6
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$430 USD
View
A
Retailer 7
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$452 USD
View
A
Retailer 8
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$494 USD
View
A
Retailer 9
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$607 USD
View
A
Retailer 10
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$617 USD
View
A
Retailer 11
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$791 USD
View
A
Retailer 12
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$814 USD
View
A
Retailer 13
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$846 USD
View
A
Retailer 14
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$854 USD
View
Retailer 15
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$1,036 USD
View
Price last confirmed 7 days ago
B+
Retailer 16
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$1,162 USD
View
B+
Retailer 17
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$1,196 USD
View
B+
Retailer 18
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$1,300 USD
View
Retailer 19
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$1,325 USD
View
Price last confirmed 42 days ago
B+
Retailer 20
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$1,480 USD
View
Most Expensive
Queensmith
LG655426099 · Oct 27
$2,184 USD
£1,720 GBP
View
Price last confirmed 8 days ago
20 more retailers have this diamond
Prices start from $224 USDSave up to $1,256 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
$224 USD