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Cushion|Natural|GIA

1.20ct E SI1 Cushion Natural Diamond

ID • E/SI1 • GIA 5553311990

Certificate GIA 5553311990

Diamond specifications and retailer prices

From $1,932 USD
As of November 6, 2026
Save $2,546 USD (57%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $4,478 USD at MOH London · As of November 4, 2026
View at MOH London

About this 1.2ct natural cushion diamond

This 1.2ct natural cushion sits in the classic one-carat band, graded E 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 5553311990. Listed at 16 retailers as of November 4, 2026, with prices from $1,932 to $4,478, a $2,546 spread on the same certified stone. MOH London lists it at $4,478. 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

1.20
Carat
E
Color
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryVery Good
FluorescenceStrong
OriginNatural
Grading LabGIA
CertificateGIA 5553311990
Dimensions7.10 × 5.45 × 3.71 mm
L/W Ratio1.30
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Feather, Cloud, Cavity, Needle
Top View
7.10 mm5.45 mm1.20 ctE / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceStrong
CertificateGIA 5553311990
Side View
Table 66.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 68.0%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: $4,478 USD|Low: $1,907 USD|High: $4,713 USD|Avg: $2,752 USD|-5.0%
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
November 6, 2026
Retailer 11$1,932 USD
Retailer 2$2,027 USD
Retailer 9$2,347 USD
Retailer 13$2,365 USD
Retailer 4$2,405 USD
Retailer 12$2,465 USD
Retailer 5$2,658 USD
Retailer 7$2,679 USD
Retailer 10$2,711 USD
Retailer 3$2,790 USD
Retailer 8$3,127 USD
Retailer 6$3,181 USD
MOH London$4,478 USD

29 data points across 13 retailers

16 retailers$1,932 USD to $4,478 USD

A
Cheapest Retailer
-
$1,932 USD
A
Retailer 2
-
$2,027 USD
View
A
Retailer 3
-
$2,347 USD
View
A
Retailer 4
-
$2,365 USD
View
Final sale: no returns
A
Retailer 5
-
$2,405 USD
View
A
Retailer 6
-
$2,465 USD
View
A
Retailer 7
-
$2,492 USD
View
Retailer 8
-
$2,658 USD
View
Price last confirmed 21 days ago
A
Retailer 9
-
$2,679 USD
View
B+
Retailer 10
-
$2,683 USD
View
A
Retailer 11
-
$2,711 USD
View
B+
Retailer 12
-
$2,790 USD
View
Retailer 13
-
$2,998 USD
View
Price last confirmed 30 days ago
B+
Retailer 14
-
$3,127 USD
View
B+
Retailer 15
-
$3,181 USD
View
Most Expensive
B
MOH London
D9C128CBD · Nov 4
$4,478 USD
£3,526 GBP
View
15 more retailers have this diamond
Prices start from $1,932 USDSave up to $2,546 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.

A
1.20ct Cushion
$1,932 USD