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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 $3,238 USD
As of November 4, 2026
Save $3,930 USD (55%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $7,168 USD 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 $3,238 to $7,168, a $3,930 spread on the same certified stone. MOH London lists it at $7,168. 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
Color
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: $7,168 USD|Low: $3,212 USD|High: $7,177 USD|Avg: $4,639 USD|+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$3,238 USD
Retailer 11$3,374 USD
Retailer 5$3,839 USD
Retailer 2$3,931 USD
Retailer 4$3,955 USD
Retailer 8$4,080 USD
Retailer 12$4,180 USD
Retailer 15$4,286 USD
Retailer 9$4,341 USD
Retailer 3$4,434 USD
Retailer 7$4,529 USD
Retailer 6$4,556 USD
Retailer 10$4,831 USD
Retailer 13$5,268 USD
Retailer 16$6,985 USD
MOH London$7,168 USD

24 data points across 16 retailers

19 retailers$3,238 USD to $7,168 USD

B+
Cheapest Retailer
-
$3,238 USD
B+
Retailer 2
-
$3,374 USD
View
Retailer 3
-
$3,839 USD
View
Price last confirmed 9 days ago
B
Retailer 4
-
$3,931 USD
View
B
Retailer 5
-
$4,066 USD
View
B
Retailer 6
-
$4,070 USD
View
Retailer 7
-
$4,080 USD
View
Price last confirmed 11 days ago
B
Retailer 8
-
$4,180 USD
View
Retailer 9
-
$4,286 USD
View
Price last confirmed 9 days ago
B
Retailer 10
-
$4,341 USD
View
B
Retailer 11
-
$4,347 USD
View
B
Retailer 12
-
$4,434 USD
View
B
Retailer 13
-
$4,529 USD
View
B
Retailer 14
-
$4,556 USD
View
Retailer 15
-
$4,760 USD
View
Price last confirmed 29 days ago
B
Retailer 16
-
$4,831 USD
View
B
Retailer 17
-
$5,268 USD
View
Retailer 18
-
$6,985 USD
View
Price last confirmed 10 days ago
Most Expensive
B
MOH London
59AF216A7 · Nov 2
$7,168 USD
£5,644 GBP
View
18 more retailers have this diamond
Prices start from $3,238 USDSave up to $3,930 USD

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
$3,238 USD