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Cushion|Natural|GIA

1.51ct J SI2 Cushion Natural Diamond

EX • J/SI2 • GIA 2245053874

Certificate GIA 2245053874

Diamond specifications and retailer prices

From $3,135 AUD
As of November 5, 2026
Save $2,813 AUD (47%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $5,948 AUD at Helzberg Diamonds · As of November 6, 2026
View at Helzberg Diamonds

About this 1.51ct natural cushion diamond

This 1.51ct natural cushion sits in the one-and-a-half to two carat band, graded J colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2245053874. Listed at 12 retailers as of November 5, 2026, with prices from $3,135 to $5,948, a $2,813 spread on the same certified stone. Helzberg Diamonds lists it at $5,948. 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

1.51
Carat
J
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2245053874
Dimensions7.40 × 5.82 × 4.04 mm
L/W Ratio1.27
Culet sizeNone
Top View
7.40 mm5.82 mm1.51 ctJ / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2245053874
Side View
Table 62.0%CrownGirdle: MED-VTKPavilionCulet: NoneDepth 69.4%

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 5
Current: $5,948 AUD|Low: $3,117 AUD|High: $6,407 AUD|Avg: $4,134 AUD|-7.2%
Helzberg Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 6, 2026
Retailer 6$3,135 AUD
Retailer 2$3,291 AUD
Retailer 8$3,317 AUD
Retailer 4$3,384 AUD
Retailer 5$3,551 AUD
Retailer 12$3,614 AUD
Retailer 3$3,615 AUD
Retailer 10$3,916 AUD
Retailer 7$3,930 AUD
Retailer 11$4,114 AUD
Retailer 9$5,628 AUD
Helzberg Diamonds$5,948 AUD

31 data points across 12 retailers

12 retailers$3,135 AUD to $5,948 AUD

A
Cheapest Retailer
-
$3,135 AUD
A
Retailer 2
-
$3,291 AUD
View
A
Retailer 3
-
$3,317 AUD
View
Retailer 4
-
$3,384 AUD
View
Price last confirmed 10 days ago
A
Retailer 5
-
$3,551 AUD
View
A
Retailer 6
-
$3,614 AUD
View
A
Retailer 7
-
$3,615 AUD
View
A
Retailer 8
-
$3,916 AUD
View
A
Retailer 9
-
$3,930 AUD
View
A
Retailer 10
-
$4,114 AUD
View
B+
Retailer 11
-
$5,628 AUD
View
Most Expensive
B+
Helzberg Diamonds
XZRIIKLGLJONK · Nov 6
$5,948 AUD
$4,087 USD
View
11 more retailers have this diamond
Prices start from $3,135 AUDSave up to $2,813 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
1.51ct Cushion
$3,135 AUD