Cushion|Lab Grown|IGI

1.21ct F VS1 Cushion Lab Grown Diamond

ID • F/VS1 • IGI LG817695911

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

Certificate IGI LG817695911

Diamond specifications and retailer prices

From $240 USD
As of November 4, 2026
Save $964 USD (80%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $1,204 USD at Flawless Fine Jewelry · As of November 4, 2026
View at Flawless Fine Jewelry

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 LG817695911 or 817695911. Listed at 16 retailers as of November 4, 2026, with prices from $240 to $1,204, a $964 spread on the same certified stone. Flawless Fine Jewelry lists it at $1,204. 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 angle36.3°
Pavilion angle39.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG817695911
Dimensions6.14 × 6.13 × 4.10 mm
L/W Ratio1.00
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
6.14 mm6.13 mm1.21 ctF / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG817695911
Side View
Table 63.0%Crown 36.3°Girdle: MED-THKPavilion 39.5°Culet: NoneDepth 66.8%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 4
Current: $1,204 USD|Low: $221 USD|High: $1,204 USD|Avg: $572 USD|+5.3%
Flawless Fine Jewelry
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
Retailer 16
November 5, 2026
Retailer 8$223 USD
Retailer 3$240 USD
Retailer 13$388 USD
Retailer 12$400 USD
Retailer 4$408 USD
Retailer 2$416 USD
Retailer 14$436 USD
Retailer 15$553 USD
Retailer 10$565 USD
Retailer 9$605 USD
Retailer 7$650 USD
Retailer 11$660 USD
Retailer 16$670 USD
Retailer 5$799 USD
Retailer 6$1,047 USD
Flawless Fine Jewelry$1,204 USD

41 data points across 16 retailers

16 retailers$240 USD to $1,204 USD

Retailer 1
-
$223 USD
Price last confirmed 11 days ago
A
Retailer 2
-
$240 USD
View
Final sale: no returns
A
Retailer 3
-
$388 USD
View
A
Retailer 4
-
$400 USD
View
A
Retailer 5
-
$408 USD
View
A
Retailer 6
-
$416 USD
View
A
Retailer 7
-
$436 USD
View
B+
Retailer 8
-
$553 USD
View
B+
Retailer 9
-
$565 USD
View
B+
Retailer 10
-
$605 USD
View
Retailer 11
-
$650 USD
View
Price last confirmed 8 days ago
B+
Retailer 12
-
$660 USD
View
B+
Retailer 13
-
$670 USD
View
B+
Retailer 14
-
$799 USD
View
Retailer 15
-
$1,047 USD
View
Price last confirmed 7 days ago
Most Expensive
B
Flawless Fine Jewelry
5A5E17ACD · Nov 4
$1,204 USD
£948 GBP
View
15 more retailers have this diamond
Prices start from $240 USDSave up to $964 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
$240 USD