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Cushion|Natural|GIA

1.21ct J SI1 Cushion Natural Diamond

EX • J/SI1 • GIA 5513610130

Certificate GIA 5513610130

Diamond specifications and retailer prices

From $2,176 SGD
As of November 5, 2026
Save $2,329 SGD (52%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $4,505 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 J colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 5513610130. Listed at 12 retailers as of November 4, 2026, with prices from $2,176 to $4,505, a $2,329 spread on the same certified stone. MOH London lists it at $4,505. 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
J
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle40°
Pavilion angle36.99°
OriginNatural
Grading LabGIA
CertificateGIA 5513610130
Dimensions6.31 × 5.80 × 3.99 mm
L/W Ratio1.09
Top View
6.31 mm5.80 mm1.21 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 5513610130
Side View
Table 62.0%Crown 40°Girdle: STK-VTKPavilion 36.99°Culet: NoneDepth 68.8%

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 5
Current: $4,505 SGD|Low: $2,029 SGD|High: $4,694 SGD|Avg: $2,945 SGD|-3.0%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 5$2,176 SGD
Retailer 9$2,179 SGD
Retailer 6$2,347 SGD
Retailer 2$2,500 SGD
Retailer 3$2,655 SGD
Retailer 8$2,746 SGD
Retailer 7$2,909 SGD
Retailer 10$2,909 SGD
Retailer 11$2,999 SGD
Retailer 4$3,512 SGD
MOH London$4,505 SGD

36 data points across 11 retailers

12 retailers$2,176 SGD to $4,505 SGD

A
Cheapest Retailer
-
$2,176 SGD
A
Retailer 2
-
$2,179 SGD
View
Final sale: no returns
B+
Retailer 3
-
$2,347 SGD
View
B+
Retailer 4
-
$2,349 SGD
View
B+
Retailer 5
-
$2,500 SGD
View
B+
Retailer 6
-
$2,655 SGD
View
B+
Retailer 7
-
$2,746 SGD
View
B
Retailer 8
-
$2,909 SGD
View
B
Retailer 9
-
$2,909 SGD
View
B
Retailer 10
-
$2,999 SGD
View
B
Retailer 11
-
$3,512 SGD
View
Most Expensive
B
MOH London
E8E9572A0 · Nov 4
$4,505 SGD
£2,768 GBP
View
11 more retailers have this diamond
Prices start from $2,176 SGDSave up to $2,329 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
$2,176 SGD