CaratHunter
Plans
Cushion|Natural|GIA

1.20ct I SI1 Cushion Natural Diamond

EX • I/SI1 • GIA 1559310061

Certificate GIA 1559310061

Diamond specifications and retailer prices

From $2,515 AUD
As of November 6, 2026
Save $3,134 AUD (55%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $5,649 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 1559310061. Listed at 21 retailers as of November 6, 2026, with prices from $2,515 to $5,649, a $3,134 spread on the same certified stone. MOH London lists it at $5,649. 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
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1559310061
Dimensions6.15 × 6.03 × 4.00 mm
L/W Ratio1.02
Girdle conditionFaceted
Top View
6.15 mm6.03 mm1.20 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1559310061
Side View
Table 65.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 66.4%

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: $5,649 AUD|Low: $2,477 AUD|High: $5,898 AUD|Avg: $3,419 AUD|-4.2%
MOH London
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
Retailer 17
Retailer 18
Retailer 19
November 7, 2026
Retailer 7$2,515 AUD
Retailer 10$2,529 AUD
Retailer 9$2,710 AUD
Retailer 17$2,752 AUD
Retailer 12$2,933 AUD
Retailer 16$2,953 AUD
Retailer 3$2,984 AUD
Retailer 11$2,995 AUD
Retailer 4$3,005 AUD
Retailer 5$3,100 AUD
Retailer 13$3,144 AUD
Retailer 8$3,179 AUD
Retailer 6$3,330 AUD
Retailer 19$3,339 AUD
Retailer 2$3,522 AUD
Retailer 15$3,956 AUD
Retailer 14$4,026 AUD
Retailer 18$5,101 AUD
MOH London$5,649 AUD

19 data points across 19 retailers

21 retailers$2,515 AUD to $5,649 AUD

A
Cheapest Retailer
-
$2,515 AUD
A
Retailer 2
-
$2,529 AUD
View
A
Retailer 3
-
$2,710 AUD
View
Final sale: no returns
A
Retailer 4
-
$2,752 AUD
View
A
Retailer 5
-
$2,933 AUD
View
A
Retailer 6
-
$2,953 AUD
View
A
Retailer 7
-
$2,984 AUD
View
A
Retailer 8
-
$2,995 AUD
View
A
Retailer 9
-
$3,005 AUD
View
A
Retailer 10
-
$3,100 AUD
View
A
Retailer 11
-
$3,144 AUD
View
A
Retailer 12
-
$3,179 AUD
View
A
Retailer 13
-
$3,330 AUD
View
A
Retailer 14
-
$3,339 AUD
View
B+
Retailer 15
-
$3,522 AUD
View
B+
Retailer 16
-
$3,564 AUD
View
B+
Retailer 17
-
$3,956 AUD
View
B+
Retailer 18
-
$4,026 AUD
View
Retailer 19
-
$4,279 AUD
View
Price last confirmed 31 days ago
B
Retailer 20
-
$5,101 AUD
View
Most Expensive
B
MOH London
E22E25E2B · Nov 7
$5,649 AUD
£3,056 GBP
View
20 more retailers have this diamond
Prices start from $2,515 AUDSave up to $3,134 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
$2,515 AUD