Cushion|Natural|GIA

1.20ct E SI1 Cushion Natural Diamond

EX • E/SI1 • GIA 1558466780

Certificate GIA 1558466780

Diamond specifications and retailer prices

From $2,966 USD
As of November 6, 2026
Save $3,011 USD (50%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $6,407 USD 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: $6,407 USD|Low: $2,966 USD|High: $6,528 USD|Avg: $3,968 USD|+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$2,966 USD
Retailer 5$2,996 USD
Retailer 13$3,125 USD
Retailer 15$3,247 USD
Retailer 16$3,263 USD
Retailer 2$3,477 USD
Retailer 7$3,505 USD
Retailer 10$3,687 USD
Retailer 6$3,700 USD
Retailer 8$3,700 USD
Retailer 14$3,830 USD
Retailer 4$4,060 USD
Retailer 9$4,173 USD
Retailer 11$4,374 USD
Retailer 12$5,977 USD
Queensmith$6,407 USD

29 data points across 16 retailers

19 retailers$2,966 USD to $5,977 USD

A
Cheapest Retailer
-
$2,966 USD
A
Retailer 2
-
$2,996 USD
View
Final sale: no returns
B+
Retailer 3
-
$3,125 USD
View
Retailer 4
-
$3,247 USD
View
Price last confirmed 8 days ago
B+
Retailer 5
-
$3,263 USD
View
B+
Retailer 6
-
$3,477 USD
View
B+
Retailer 7
-
$3,505 USD
View
B+
Retailer 8
-
$3,515 USD
View
B+
Retailer 9
-
$3,687 USD
View
B+
Retailer 10
-
$3,700 USD
View
B+
Retailer 11
-
$3,700 USD
View
B+
Retailer 12
-
$3,749 USD
View
B+
Retailer 13
-
$3,830 USD
View
Retailer 14
-
$4,060 USD
View
Price last confirmed 14 days ago
Retailer 15
-
$4,106 USD
View
Price last confirmed 33 days ago
B+
Retailer 16
-
$4,173 USD
View
B+
Retailer 17
-
$4,374 USD
View
B
Retailer 18
-
$5,977 USD
View
Most Expensive
Queensmith
1558466780 · Oct 28
$6,407 USD
£5,045 GBP
View
Price last confirmed 9 days ago
18 more retailers have this diamond
Prices start from $2,966 USDSave up to $3,011 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
$2,966 USD