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Cushion|Natural|GIA

1.20ct I SI1 Cushion Natural Diamond

EX • I/SI1 • GIA 1553750815

Certificate GIA 1553750815

Diamond specifications and retailer prices

From $2,738 AUD
As of November 6, 2026
Save $3,617 AUD (57%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $6,355 AUD at MOH London · As of November 7, 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 I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1553750815. Listed at 17 retailers as of November 6, 2026, with prices from $2,738 to $6,355, a $3,617 spread on the same certified stone. MOH London lists it at $6,355. 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
I
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 1553750815
Dimensions7.02 × 5.24 × 3.60 mm
L/W Ratio1.34
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Feather, Cloud, Needle
Top View
7.02 mm5.24 mm1.20 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 1553750815
Side View
Table 64.0%CrownGirdle: MED-THKPavilionCulet: NoneDepth 68.7%

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: $6,355 AUD|Low: $2,738 AUD|High: $6,458 AUD|Avg: $3,997 AUD|-1.6%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 7, 2026
Retailer 8$2,738 AUD
Retailer 3$2,863 AUD
Retailer 7$3,196 AUD
Retailer 4$3,538 AUD
Retailer 9$3,647 AUD
Retailer 2$3,858 AUD
Retailer 6$4,451 AUD
Retailer 5$4,528 AUD
MOH London$6,355 AUD

27 data points across 9 retailers

17 retailers$2,738 AUD to $6,355 AUD

A
Cheapest Retailer
-
$2,738 AUD
A
Retailer 2
-
$2,863 AUD
View
A
Retailer 3
-
$3,196 AUD
View
B+
Retailer 4
-
$3,365 AUD
View
Final sale: no returns
B+
Retailer 5
-
$3,394 AUD
View
B+
Retailer 6
-
$3,398 AUD
View
B+
Retailer 7
-
$3,538 AUD
View
Retailer 8
-
$3,647 AUD
View
Price last confirmed 9 days ago
B+
Retailer 9
-
$3,812 AUD
View
B+
Retailer 10
-
$3,851 AUD
View
B+
Retailer 11
-
$3,858 AUD
View
B+
Retailer 12
-
$3,886 AUD
View
B+
Retailer 13
-
$3,959 AUD
View
Retailer 14
-
$4,085 AUD
View
Price last confirmed 31 days ago
B+
Retailer 15
-
$4,451 AUD
View
B
Retailer 16
-
$4,528 AUD
View
Most Expensive
B
MOH London
98F9CC2F9 · Nov 7
$6,355 AUD
£3,438 GBP
View
16 more retailers have this diamond
Prices start from $2,738 AUDSave up to $3,617 AUD

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
$2,738 AUD