CaratHunter
Plans
Cushion|Natural|GIA

1.20ct E SI1 Cushion Natural Diamond

EX • E/SI1 • GIA 1558466780

Certificate GIA 1558466780

Diamond specifications and retailer prices

From $5,350 NZD
As of November 6, 2026
Save $5,432 NZD (50%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $11,558 NZD 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: $11,558 NZD|Low: $5,350 NZD|High: $11,775 NZD|Avg: $7,158 NZD|+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$5,350 NZD
Retailer 5$5,404 NZD
Retailer 13$5,637 NZD
Retailer 15$5,857 NZD
Retailer 16$5,886 NZD
Retailer 2$6,272 NZD
Retailer 7$6,323 NZD
Retailer 10$6,651 NZD
Retailer 6$6,674 NZD
Retailer 8$6,674 NZD
Retailer 14$6,909 NZD
Retailer 4$7,324 NZD
Retailer 9$7,528 NZD
Retailer 11$7,890 NZD
Retailer 12$10,782 NZD
Queensmith$11,558 NZD

29 data points across 16 retailers

19 retailers$5,350 NZD to $10,782 NZD

A
Cheapest Retailer
-
$5,350 NZD
A
Retailer 2
-
$5,404 NZD
View
Final sale: no returns
B+
Retailer 3
-
$5,637 NZD
View
Retailer 4
-
$5,857 NZD
View
Price last confirmed 8 days ago
B+
Retailer 5
-
$5,886 NZD
View
B+
Retailer 6
-
$6,272 NZD
View
B+
Retailer 7
-
$6,323 NZD
View
B+
Retailer 8
-
$6,341 NZD
View
B+
Retailer 9
-
$6,651 NZD
View
B+
Retailer 10
-
$6,674 NZD
View
B+
Retailer 11
-
$6,674 NZD
View
B+
Retailer 12
-
$6,763 NZD
View
B+
Retailer 13
-
$6,909 NZD
View
Retailer 14
-
$7,324 NZD
View
Price last confirmed 14 days ago
Retailer 15
-
$7,407 NZD
View
Price last confirmed 33 days ago
B+
Retailer 16
-
$7,528 NZD
View
B+
Retailer 17
-
$7,890 NZD
View
B
Retailer 18
-
$10,782 NZD
View
Most Expensive
Queensmith
1558466780 · Oct 28
$11,558 NZD
£5,045 GBP
View
Price last confirmed 9 days ago
18 more retailers have this diamond
Prices start from $5,350 NZDSave up to $5,432 NZD

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
$5,350 NZD