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Cushion|Natural|GIA

1.20ct E SI1 Cushion Natural Diamond

EX • E/SI1 • GIA 1558466780

Certificate GIA 1558466780

Diamond specifications and retailer prices

From $4,172 CAD
As of November 6, 2026
Save $4,235 CAD (50%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $9,012 CAD at Queensmith · As of October 28, 2026
View at Queensmith

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 1558466780. Listed at 19 retailers as of November 4, 2026, with a 102% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1558466780
Dimensions6.91 × 5.31 × 3.66 mm
L/W Ratio1.30
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Cloud, Crystal, Feather, Needle, Indented Natural, Natural
Top View
6.91 mm5.31 mm1.20 ctE / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1558466780
Side View
Table 65.0%CrownGirdle: THN-STKPavilionCulet: NoneDepth 68.8%

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: $9,012 CAD|Low: $4,172 CAD|High: $9,182 CAD|Avg: $5,581 CAD|+0.7%
Queensmith
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 6, 2026
Retailer 3$4,172 CAD
Retailer 5$4,214 CAD
Retailer 13$4,396 CAD
Retailer 15$4,567 CAD
Retailer 16$4,590 CAD
Retailer 2$4,891 CAD
Retailer 7$4,930 CAD
Retailer 10$5,186 CAD
Retailer 6$5,204 CAD
Retailer 8$5,204 CAD
Retailer 14$5,387 CAD
Retailer 4$5,711 CAD
Retailer 9$5,870 CAD
Retailer 11$6,152 CAD
Retailer 12$8,407 CAD
Queensmith$9,012 CAD

29 data points across 16 retailers

19 retailers$4,172 CAD to $8,407 CAD

A
Cheapest Retailer
-
$4,172 CAD
A
Retailer 2
-
$4,214 CAD
View
Final sale: no returns
B+
Retailer 3
-
$4,396 CAD
View
Retailer 4
-
$4,567 CAD
View
Price last confirmed 8 days ago
B+
Retailer 5
-
$4,590 CAD
View
B+
Retailer 6
-
$4,891 CAD
View
B+
Retailer 7
-
$4,930 CAD
View
B+
Retailer 8
-
$4,944 CAD
View
B+
Retailer 9
-
$5,186 CAD
View
B+
Retailer 10
-
$5,204 CAD
View
B+
Retailer 11
-
$5,204 CAD
View
B+
Retailer 12
-
$5,273 CAD
View
B+
Retailer 13
-
$5,387 CAD
View
Retailer 14
-
$5,711 CAD
View
Price last confirmed 14 days ago
Retailer 15
-
$5,775 CAD
View
Price last confirmed 33 days ago
B+
Retailer 16
-
$5,870 CAD
View
B+
Retailer 17
-
$6,152 CAD
View
B
Retailer 18
-
$8,407 CAD
View
Most Expensive
Queensmith
1558466780 · Oct 28
$9,012 CAD
£5,045 GBP
View
Price last confirmed 9 days ago
18 more retailers have this diamond
Prices start from $4,172 CADSave up to $4,235 CAD

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
$4,172 CAD