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Cushion|Natural|GIA

1.30ct G SI1 Cushion Natural Diamond

ID • G/SI1 • GIA 7426459003

Certificate GIA 7426459003

Diamond specifications and retailer prices

From $5,640 AUD
As of November 6, 2026
Save $6,164 AUD (52%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $11,804 AUD at MOH London · As of November 4, 2026
View at MOH London

About this 1.3ct natural cushion diamond

This 1.3ct natural cushion sits in the one-and-a-quarter to one-and-a-half carat band, graded G 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 7426459003. Listed at 11 retailers as of November 4, 2026, with prices from $5,640 to $11,804, a $6,164 spread on the same certified stone. MOH London lists it at $11,804. 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

1.30
Carat
G
Colour
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 7426459003
Dimensions6.38 × 5.87 × 4.07 mm
L/W Ratio1.09
Top View
6.38 mm5.87 mm1.30 ctG / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 7426459003
Side View
Table 63.0%CrownGirdle: THK-ETKPavilionCulet: NoneDepth 69.2%

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: $11,804 AUD|Low: $5,640 AUD|High: $11,977 AUD|Avg: $7,591 AUD|-0.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 6, 2026
Retailer 7$5,640 AUD
Retailer 8$5,871 AUD
Retailer 5$6,731 AUD
Retailer 6$7,124 AUD
Retailer 2$7,316 AUD
Retailer 4$7,489 AUD
Retailer 3$8,374 AUD
MOH London$11,804 AUD

44 data points across 8 retailers

11 retailers$5,640 AUD to $11,804 AUD

A
Cheapest Retailer
-
$5,640 AUD
B+
Retailer 2
-
$5,871 AUD
View
B+
Retailer 3
-
$6,322 AUD
View
B+
Retailer 4
-
$6,683 AUD
View
Retailer 5
-
$6,731 AUD
View
Price last confirmed 9 days ago
B
Retailer 6
-
$7,124 AUD
View
B+
Retailer 7
-
$7,316 AUD
View
Retailer 8
-
$7,489 AUD
View
Price last confirmed 29 days ago
Retailer 9
-
$8,203 AUD
View
Price last confirmed 15 days ago
B
Retailer 10
-
$8,374 AUD
View
Most Expensive
B
MOH London
FB5C5F0BE · Nov 4
$11,804 AUD
£6,386 GBP
View
10 more retailers have this diamond
Prices start from $5,640 AUDSave up to $6,164 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
1.30ct Cushion
$5,640 AUD