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Cushion|Natural|GIA

1.21ct F SI1 Cushion Natural Diamond

GD • F/SI1 • GIA 1555552860

Certificate GIA 1555552860

Diamond specifications and retailer prices

From $4,150 SGD
As of November 4, 2026
Save $5,037 SGD (55%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $9,186 SGD at MOH London · As of November 2, 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 standard cut grade stated by the retailer rather than the lab and certified by GIA 1555552860. Listed at 19 retailers as of November 2, 2026, with prices from $4,150 to $9,186, a $5,037 spread on the same certified stone. MOH London lists it at $9,186. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

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

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1555552860
Dimensions7.35 × 5.50 × 3.68 mm
L/W Ratio1.34
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Cloud, Crystal, Cavity, Needle, Indented Natural
Top View
7.35 mm5.50 mm1.21 ctF / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 1555552860
Side View
Table 67.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 67.0%

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 4
Current: $9,186 SGD|Low: $4,116 SGD|High: $9,198 SGD|Avg: $5,945 SGD|+0.6%
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
November 5, 2026
Retailer 14$4,150 SGD
Retailer 11$4,324 SGD
Retailer 5$4,920 SGD
Retailer 2$5,038 SGD
Retailer 4$5,069 SGD
Retailer 8$5,229 SGD
Retailer 12$5,357 SGD
Retailer 15$5,493 SGD
Retailer 9$5,563 SGD
Retailer 3$5,683 SGD
Retailer 7$5,804 SGD
Retailer 6$5,839 SGD
Retailer 10$6,191 SGD
Retailer 13$6,751 SGD
Retailer 16$8,952 SGD
MOH London$9,186 SGD

24 data points across 16 retailers

19 retailers$4,150 SGD to $9,186 SGD

B+
Cheapest Retailer
-
$4,150 SGD
B+
Retailer 2
-
$4,324 SGD
View
Retailer 3
-
$4,920 SGD
View
Price last confirmed 9 days ago
B
Retailer 4
-
$5,038 SGD
View
B
Retailer 5
-
$5,211 SGD
View
B
Retailer 6
-
$5,216 SGD
View
Retailer 7
-
$5,229 SGD
View
Price last confirmed 11 days ago
B
Retailer 8
-
$5,357 SGD
View
Retailer 9
-
$5,493 SGD
View
Price last confirmed 9 days ago
B
Retailer 10
-
$5,563 SGD
View
B
Retailer 11
-
$5,571 SGD
View
B
Retailer 12
-
$5,683 SGD
View
B
Retailer 13
-
$5,804 SGD
View
B
Retailer 14
-
$5,839 SGD
View
Retailer 15
-
$6,100 SGD
View
Price last confirmed 29 days ago
B
Retailer 16
-
$6,191 SGD
View
B
Retailer 17
-
$6,751 SGD
View
Retailer 18
-
$8,952 SGD
View
Price last confirmed 10 days ago
Most Expensive
B
MOH London
59AF216A7 · Nov 2
$9,186 SGD
£5,644 GBP
View
18 more retailers have this diamond
Prices start from $4,150 SGDSave up to $5,037 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
$4,150 SGD