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Cushion|Natural|GIA

1.21ct F SI1 Cushion Natural Diamond

EX • F/SI1 • GIA 6555373722

Certificate GIA 6555373722

Diamond specifications and retailer prices

From $2,509 SGD
As of November 6, 2026
Save $3,140 SGD (56%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: $5,650 SGD at MOH London · As of November 4, 2026
View at MOH London

About this 1.21ct natural cushion diamond

This 1.21ct natural cushion sits in the classic one-carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6555373722. Listed at 23 retailers as of November 4, 2026, with prices from $2,509 to $5,650, a $3,140 spread on the same certified stone. MOH London lists it at $5,650. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.21
Carat
F
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6555373722
Dimensions6.26 × 6.00 × 4.00 mm
L/W Ratio1.04
Girdle conditionFaceted
Top View
6.26 mm6.00 mm1.21 ctF / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6555373722
Side View
Table 64.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 66.6%

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 6
Current: $5,650 SGD|Low: $2,476 SGD|High: $6,060 SGD|Avg: $3,450 SGD|-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
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
Retailer 19
Retailer 20
November 7, 2026
Retailer 5$2,509 SGD
Retailer 7$2,702 SGD
Retailer 19$2,759 SGD
Retailer 8$2,762 SGD
Retailer 12$2,958 SGD
Retailer 13$2,958 SGD
Retailer 11$2,975 SGD
Retailer 3$3,010 SGD
Retailer 16$3,043 SGD
Retailer 4$3,127 SGD
Retailer 6$3,132 SGD
Retailer 10$3,163 SGD
Retailer 9$3,322 SGD
Retailer 15$3,421 SGD
Retailer 14$3,460 SGD
Retailer 2$3,517 SGD
Retailer 18$3,946 SGD
Retailer 17$4,014 SGD
Retailer 20$5,151 SGD
MOH London$5,650 SGD

23 data points across 20 retailers

23 retailers$2,509 SGD to $5,650 SGD

A
Cheapest Retailer
-
$2,509 SGD
A
Retailer 2
-
$2,702 SGD
View
Final sale: no returns
A
Retailer 3
-
$2,759 SGD
View
A
Retailer 4
-
$2,762 SGD
View
A
Retailer 5
-
$2,958 SGD
View
A
Retailer 6
-
$2,958 SGD
View
A
Retailer 7
-
$2,975 SGD
View
A
Retailer 8
-
$3,010 SGD
View
A
Retailer 9
-
$3,043 SGD
View
A
Retailer 10
-
$3,127 SGD
View
A
Retailer 11
-
$3,132 SGD
View
A
Retailer 12
-
$3,163 SGD
View
A
Retailer 13
-
$3,322 SGD
View
Retailer 14
-
$3,417 SGD
View
Price last confirmed 30 days ago
B+
Retailer 15
-
$3,421 SGD
View
Retailer 16
-
$3,460 SGD
View
B+
Retailer 17
-
$3,480 SGD
View
Retailer 18
-
$3,517 SGD
View
Retailer 19
-
$3,833 SGD
View
Price last confirmed 31 days ago
B+
Retailer 20
-
$3,946 SGD
View
B+
Retailer 21
-
$4,014 SGD
View
B+
Retailer 22
-
$5,151 SGD
View
Most Expensive
B
MOH London
6AB239AD3 · Nov 4
$5,650 SGD
£3,471 GBP
View
22 more retailers have this diamond
Prices start from $2,509 SGDSave up to $3,140 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
$2,509 SGD