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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 $335 CAD
$240 USD
As of November 1, 2026
Save $1,347 CAD (80%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $1,682 CAD at Flawless Fine Jewelry · As of November 3, 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 1, 2026, with prices from $335 to $1,682, a $1,347 spread on the same certified stone. Flawless Fine Jewelry lists it at $1,682. 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

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 1
Current: $1,682 CAD|Low: $309 CAD|High: $1,682 CAD|Avg: $796 CAD|+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 3, 2026
Retailer 8$312 CAD
Retailer 3$335 CAD
Retailer 13$543 CAD
Retailer 12$559 CAD
Retailer 4$570 CAD
Retailer 2$587 CAD
Retailer 14$609 CAD
Retailer 15$773 CAD
Retailer 10$790 CAD
Retailer 9$845 CAD
Retailer 7$909 CAD
Retailer 11$922 CAD
Retailer 16$936 CAD
Retailer 5$1,117 CAD
Retailer 6$1,464 CAD
Flawless Fine Jewelry$1,682 CAD

39 data points across 16 retailers

16 retailers$335 CAD to $1,682 CAD

Retailer 1
-
$312 CAD
$223 USD
Price last confirmed 9 days ago
A
Retailer 2
-
$335 CAD
$240 USD
View
Final sale: no returns
A
Retailer 3
-
$543 CAD
€370 EUR
View
A
Retailer 4
-
$559 CAD
ZAR 6,464 ZAR
View
A
Retailer 5
-
$570 CAD
$408 USD
View
A
Retailer 6
-
$587 CAD
£331 GBP
View
A
Retailer 7
-
$609 CAD
$436 USD
View
B+
Retailer 8
-
$773 CAD
$553 USD
View
B+
Retailer 9
-
$790 CAD
A$870 AUD
View
B+
Retailer 10
-
$845 CAD
$605 USD
View
B+
Retailer 11
-
$909 CAD
A$1,001 AUD
View
B+
Retailer 12
-
$922 CAD
$660 USD
View
B+
Retailer 13
-
$936 CAD
$670 USD
View
B+
Retailer 14
-
$1,117 CAD
$799 USD
View
B
Retailer 15
-
$1,464 CAD
£825 GBP
View
Most Expensive
B
Flawless Fine Jewelry
5A5E17ACD · Nov 3
$1,682 CAD
£948 GBP
View
15 more retailers have this diamond
Prices start from $335 CADSave up to $1,347 CAD

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
$335 CAD