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Cushion|Lab Grown|IGI

1.21ct F VS1 Cushion Lab Grown Diamond

ID • F/VS1 • IGI LG801634581

Shape and cutting style on the report: Square cushion modified brilliant

Certificate IGI LG801634581

Diamond specifications and retailer prices

From $388 USD
As of October 31, 2026
Save $693 USD (64%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $1,081 USD at MOH London · As of November 5, 2026
View at MOH London

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 VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG801634581 or 801634581. Listed at 13 retailers as of October 31, 2026, with prices from $388 to $1,081, a $693 spread on the same certified stone. MOH London lists it at $1,081. 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 angle32.4°
Pavilion angle40.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG801634581
Dimensions6.20 × 6.13 × 4.14 mm
L/W Ratio1.01
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
6.20 mm6.13 mm1.21 ctF / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG801634581
Side View
Table 59.0%Crown 32.4°Girdle: THK-VTKPavilion 40.1°Culet: NoneDepth 67.5%

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 31
Current: $1,081 USD|Low: $221 USD|High: $1,083 USD|Avg: $559 USD|+6.8%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 5, 2026
Retailer 4$223 USD
Retailer 8$388 USD
Retailer 7$400 USD
Retailer 11$408 USD
Retailer 2$416 USD
Retailer 9$436 USD
Retailer 5$605 USD
Retailer 3$650 USD
Retailer 6$660 USD
Retailer 10$670 USD
Retailer 12$799 USD
MOH London$1,081 USD

43 data points across 12 retailers

13 retailers$388 USD to $1,081 USD

Retailer 1
-
$223 USD
Price last confirmed 11 days ago
A
Retailer 2
-
$388 USD
View
A
Retailer 3
-
$400 USD
View
A
Retailer 4
-
$408 USD
View
A
Retailer 5
-
$416 USD
View
A
Retailer 6
-
$436 USD
View
B+
Retailer 7
-
$605 USD
View
Retailer 8
-
$650 USD
View
Price last confirmed 8 days ago
B+
Retailer 9
-
$660 USD
View
B+
Retailer 10
-
$670 USD
View
B
Retailer 11
-
$799 USD
View
Retailer 12
-
$880 USD
View
Price last confirmed 34 days ago
Most Expensive
B
MOH London
LG801634581 · Nov 5
$1,081 USD
£851 GBP
View
12 more retailers have this diamond
Prices start from $388 USDSave up to $693 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
$388 USD