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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 $3,801 SGD
As of November 6, 2026
Save $3,859 SGD (50%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $8,211 SGD 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
Colour
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: $8,211 SGD|Low: $3,801 SGD|High: $8,366 SGD|Avg: $5,085 SGD|+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$3,801 SGD
Retailer 5$3,840 SGD
Retailer 13$4,005 SGD
Retailer 15$4,161 SGD
Retailer 16$4,182 SGD
Retailer 2$4,456 SGD
Retailer 7$4,492 SGD
Retailer 10$4,725 SGD
Retailer 6$4,742 SGD
Retailer 8$4,742 SGD
Retailer 14$4,909 SGD
Retailer 4$5,203 SGD
Retailer 9$5,348 SGD
Retailer 11$5,606 SGD
Retailer 12$7,660 SGD
Queensmith$8,211 SGD

29 data points across 16 retailers

19 retailers$3,801 SGD to $7,660 SGD

A
Cheapest Retailer
-
$3,801 SGD
A
Retailer 2
-
$3,840 SGD
View
Final sale: no returns
B+
Retailer 3
-
$4,005 SGD
View
Retailer 4
-
$4,161 SGD
View
Price last confirmed 8 days ago
B+
Retailer 5
-
$4,182 SGD
View
B+
Retailer 6
-
$4,456 SGD
View
B+
Retailer 7
-
$4,492 SGD
View
B+
Retailer 8
-
$4,505 SGD
View
B+
Retailer 9
-
$4,725 SGD
View
B+
Retailer 10
-
$4,742 SGD
View
B+
Retailer 11
-
$4,742 SGD
View
B+
Retailer 12
-
$4,805 SGD
View
B+
Retailer 13
-
$4,909 SGD
View
Retailer 14
-
$5,203 SGD
View
Price last confirmed 14 days ago
Retailer 15
-
$5,262 SGD
View
Price last confirmed 33 days ago
B+
Retailer 16
-
$5,348 SGD
View
B+
Retailer 17
-
$5,606 SGD
View
B
Retailer 18
-
$7,660 SGD
View
Most Expensive
Queensmith
1558466780 · Oct 28
$8,211 SGD
£5,045 GBP
View
Price last confirmed 9 days ago
18 more retailers have this diamond
Prices start from $3,801 SGDSave up to $3,859 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.

A
1.20ct Cushion
$3,801 SGD