CaratHunter
Plans
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 $307 SGD
As of November 4, 2026
Save $1,231 SGD (80%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $1,538 SGD 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 $307 to $1,538, a $1,231 spread on the same certified stone. Flawless Fine Jewelry lists it at $1,538. 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
Colour
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
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 4
Current: $1,538 SGD|Low: $282 SGD|High: $1,538 SGD|Avg: $731 SGD|+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$285 SGD
Retailer 3$307 SGD
Retailer 13$496 SGD
Retailer 12$511 SGD
Retailer 4$521 SGD
Retailer 2$531 SGD
Retailer 14$557 SGD
Retailer 15$706 SGD
Retailer 10$722 SGD
Retailer 9$773 SGD
Retailer 7$830 SGD
Retailer 11$843 SGD
Retailer 16$856 SGD
Retailer 5$1,021 SGD
Retailer 6$1,337 SGD
Flawless Fine Jewelry$1,538 SGD

41 data points across 16 retailers

16 retailers$307 SGD to $1,538 SGD

Retailer 1
-
$285 SGD
Price last confirmed 11 days ago
A
Retailer 2
-
$307 SGD
View
Final sale: no returns
A
Retailer 3
-
$496 SGD
View
A
Retailer 4
-
$511 SGD
View
A
Retailer 5
-
$521 SGD
View
A
Retailer 6
-
$531 SGD
View
A
Retailer 7
-
$557 SGD
View
B+
Retailer 8
-
$706 SGD
View
B+
Retailer 9
-
$722 SGD
View
B+
Retailer 10
-
$773 SGD
View
Retailer 11
-
$830 SGD
View
Price last confirmed 8 days ago
B+
Retailer 12
-
$843 SGD
View
B+
Retailer 13
-
$856 SGD
View
B+
Retailer 14
-
$1,021 SGD
View
Retailer 15
-
$1,337 SGD
View
Price last confirmed 7 days ago
Most Expensive
B
Flawless Fine Jewelry
5A5E17ACD · Nov 4
$1,538 SGD
£948 GBP
View
15 more retailers have this diamond
Prices start from $307 SGDSave up to $1,231 SGD

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
$307 SGD