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Cushion|Natural|GIA

1.21ct F SI1 Cushion Natural Diamond

EX • F/SI1 • GIA 2307390593

Certificate GIA 2307390593

Diamond specifications and retailer prices

From $4,955 SGD
As of November 5, 2026
Save $2,853 SGD (37%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $7,808 SGD at Steven Stone · As of November 7, 2026
View at Steven Stone

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 2307390593. Listed at 8 retailers as of November 5, 2026, with prices from $4,955 to $7,808, a $2,853 spread on the same certified stone. Steven Stone lists it at $7,808. 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
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2307390593
Dimensions6.26 × 5.78 × 3.92 mm
L/W Ratio1.08
Top View
6.26 mm5.78 mm1.21 ctF / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 2307390593
Side View
Table 59.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 67.9%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: $6,904 SGD|Low: $4,589 SGD|High: $7,808 SGD|Avg: $6,087 SGD|+0.7%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Steven Stone
November 7, 2026
Retailer 6$4,955 SGD
Retailer 2$5,048 SGD
Retailer 4$6,459 SGD
Retailer 5$6,459 SGD
Retailer 3$6,677 SGD
Retailer 1$6,904 SGD
Steven Stone$7,808 SGD

36 data points across 7 retailers

8 retailers$4,955 SGD to $7,808 SGD

B+
Cheapest Retailer
-
$4,955 SGD
B+
Retailer 2
-
$5,048 SGD
View
Final sale: no returns
B
Retailer 3
-
$5,243 SGD
View
B
Retailer 4
-
$6,459 SGD
View
B
Retailer 5
-
$6,459 SGD
View
B
Retailer 6
-
$6,677 SGD
View
B
Retailer 7
-
$6,904 SGD
View
Most Expensive
Steven Stone
6936280 · Nov 7
$7,808 SGD
£4,797 GBP
View
7 more retailers have this diamond
Prices start from $4,955 SGDSave up to $2,853 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.

B+
1.21ct Cushion
$4,955 SGD