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Cushion|Natural|GIA

1.51ct I SI2 Cushion Natural Diamond

EX • I/SI2 • GIA 7542375535

Certificate GIA 7542375535

Diamond specifications and retailer prices

From $4,012 AUD
$2,818 USD
As of October 26, 2026
Save $2,066 AUD (34%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $8,742 AUD at MOH London · As of October 21, 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 I 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 7542375535. Listed at 16 retailers as of October 26, 2026, with a 52% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
I
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Pavilion angle41.4°
OriginNatural
Grading LabGIA
CertificateGIA 7542375535
Dimensions6.87 × 6.62 × 4.36 mm
L/W Ratio1.04
Girdle conditionFaceted
Top View
6.87 mm6.62 mm1.51 ctI / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 7542375535
Side View
Table 65.0%CrownGirdle: STK-VTKPavilion 41.4°Culet: NoneDepth 65.9%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 26
Current: $8,742 AUD|Low: $3,761 AUD|High: $9,235 AUD|Avg: $5,527 AUD|-5.3%
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
October 29, 2026
Retailer 10$3,991 AUD
Retailer 3$4,012 AUD
Retailer 8$4,302 AUD
Retailer 9$4,316 AUD
Retailer 11$4,348 AUD
Retailer 13$4,601 AUD
Retailer 5$4,867 AUD
Retailer 14$5,082 AUD
Retailer 6$5,136 AUD
Retailer 7$5,322 AUD
Retailer 2$6,078 AUD
Retailer 4$7,175 AUD
Retailer 12$8,342 AUD
MOH London$8,742 AUD

33 data points across 14 retailers

16 retailers$4,012 AUD to $6,078 AUD

Retailer 1
-
$3,991 AUD
HK$21,900 HKD
Price last confirmed 9 days ago
A
Retailer 2
-
$4,012 AUD
$2,818 USD
View
Retailer 3
-
$4,302 AUD
$3,022 USD
View
Price last confirmed 7 days ago
A
Retailer 4
-
$4,316 AUD
$3,032 USD
View
A
Retailer 5
-
$4,348 AUD
$3,054 USD
View
Final sale: no returns
A
Retailer 6
-
$4,601 AUD
$3,232 USD
View
A
Retailer 7
-
$4,798 AUD
View
A
Retailer 8
-
$4,867 AUD
$3,419 USD
View
A
Retailer 9
-
$5,082 AUD
$3,570 USD
View
A
Retailer 10
-
$5,136 AUD
SGD 4,875 SGD
View
Retailer 11
-
$5,322 AUD
£2,944 GBP
View
Price last confirmed 9 days ago
A
Retailer 12
-
$5,661 AUD
View
A
Retailer 13
-
$6,078 AUD
€4,066 EUR
View
B+
Retailer 14
-
$7,175 AUD
$5,040 USD
View
Price last confirmed 7 days ago
Retailer 15
-
$8,342 AUD
$5,860 USD
View
Price last confirmed 9 days ago
Most Expensive
MOH London
BF6973D52 · Oct 21
$8,742 AUD
£4,835 GBP
View
Price last confirmed 12 days ago
15 more retailers have this diamond
Prices start from $4,012 AUDSave up to $2,066 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
$4,012 AUD