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Cushion|Natural|GIA

1.51ct J SI2 Cushion Natural Diamond

ID • J/SI2 • GIA 2557531375

Certificate GIA 2557531375

Diamond specifications and retailer prices

From $3,827 AUD
HK$21,000 HKD
As of November 2, 2026
Save $4,705 AUD (55%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $8,532 AUD at MOH London · As of November 1, 2026
View at MOH London

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 2557531375. Listed at 13 retailers as of November 1, 2026, with prices from $3,827 to $8,532, a $4,705 spread on the same certified stone. MOH London lists it at $8,532. 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
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 2557531375
Dimensions7.62 × 5.83 × 4.01 mm
L/W Ratio1.31
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Feather, Needle, Indented Natural
Top View
7.62 mm5.83 mm1.51 ctJ / SI2
OriginNatural
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 2557531375
Side View
Table 65.0%CrownGirdle: THK-VTKPavilionCulet: 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 2
Current: $8,532 AUD|Low: $3,808 AUD|High: $8,845 AUD|Avg: $5,338 AUD|-3.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 2, 2026
Retailer 4$3,827 AUD
Retailer 2$4,078 AUD
Retailer 11$4,585 AUD
Retailer 7$4,675 AUD
Retailer 3$5,206 AUD
Retailer 6$5,274 AUD
Retailer 8$5,296 AUD
Retailer 10$5,353 AUD
Retailer 9$5,395 AUD
Retailer 5$5,930 AUD
MOH London$8,532 AUD

31 data points across 11 retailers

13 retailers$3,827 AUD to $8,532 AUD

A
Cheapest Retailer
-
$3,827 AUD
HK$21,000 HKD
A
Retailer 2
-
$4,078 AUD
₹272,831 INR
View
A
Retailer 3
-
$4,585 AUD
SGD 4,352 SGD
View
A
Retailer 4
-
$4,675 AUD
$3,284 USD
View
Final sale: no returns
B+
Retailer 5
-
$4,853 AUD
$3,409 USD
View
B+
Retailer 6
-
$5,115 AUD
View
Retailer 7
-
$5,206 AUD
$3,657 USD
View
Price last confirmed 17 days ago
B+
Retailer 8
-
$5,274 AUD
$3,704 USD
View
B+
Retailer 9
-
$5,296 AUD
£2,929 GBP
View
B+
Retailer 10
-
$5,353 AUD
SGD 5,081 SGD
View
B+
Retailer 11
-
$5,395 AUD
$3,790 USD
View
B+
Retailer 12
-
$5,930 AUD
€3,967 EUR
View
Most Expensive
B
MOH London
A856D8BF8 · Nov 1
$8,532 AUD
£4,719 GBP
View
12 more retailers have this diamond
Prices start from $3,827 AUDSave up to $4,705 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
$3,827 AUD