Cushion|Lab Grown|IGI

1.21ct D VS1 Cushion Lab Grown Diamond

ID • D/VS1 • IGI LG809686458

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

Certificate IGI LG809686458

Diamond specifications and retailer prices

From $243 USD
As of October 25, 2026
Save $900 USD (79%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $1,143 USD at MOH London · As of October 29, 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 D colour (colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG809686458 or 809686458. Listed at 9 retailers as of October 25, 2026, with prices from $243 to $1,143, a $900 spread on the same certified stone. MOH London lists it at $1,143. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.21
Carat
D
Color
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.1°
Pavilion angle31.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG809686458
Dimensions6.16 × 5.86 × 3.67 mm
L/W Ratio1.05
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
6.16 mm5.86 mm1.21 ctD / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG809686458
Side View
Table 59.0%Crown 34.1°Girdle: STK-THKPavilion 31.8°CuletDepth 62.6%

Caratlytics Score

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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 25
Current: $1,143 USD|Low: $243 USD|High: $1,151 USD|Avg: $663 USD|+0.6%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
October 30, 2026
Retailer 6$243 USD
Retailer 2$326 USD
Retailer 3$412 USD
Retailer 8$424 USD
Retailer 5$624 USD
Retailer 7$745 USD
Retailer 9$930 USD
Retailer 4$945 USD
MOH London$1,143 USD

36 data points across 9 retailers

9 retailers$243 USD to $1,143 USD

A
Cheapest Retailer
-
$243 USD
A
Retailer 2
-
$326 USD
£256 GBP
View
A
Retailer 3
-
$412 USD
€392 EUR
View
A
Retailer 4
-
$424 USD
View
B+
Retailer 5
-
$624 USD
View
Retailer 6
-
$745 USD
View
Price last confirmed 26 days ago
Retailer 7
-
$930 USD
View
Price last confirmed 32 days ago
B
Retailer 8
-
$945 USD
£744 GBP
View
Most Expensive
B
MOH London
LG809686458 · Oct 29
$1,143 USD
£900 GBP
View
8 more retailers have this diamond
Prices start from $243 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 Cushion
$243 USD