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Cushion|Natural|GIA

1.51ct K SI2 Cushion Natural Diamond

EX • K/SI2 • GIA 7538986848

Certificate GIA 7538986848

Diamond specifications and retailer prices

From $2,045 AUD
As of November 6, 2026
Save $2,646 AUD (56%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $4,691 AUD at MOH London · As of November 4, 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 K colour (faint-tinted) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 7538986848. Listed at 10 retailers as of November 4, 2026, with prices from $2,045 to $4,691, a $2,646 spread on the same certified stone. MOH London lists it at $4,691. 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
K
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 7538986848
Dimensions7.12 × 6.37 × 4.41 mm
L/W Ratio1.12
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Feather, Cloud, Needle
Top View
7.12 mm6.37 mm1.51 ctK / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 7538986848
Side View
Table 68.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 69.3%

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: $4,691 AUD|Low: $2,045 AUD|High: $5,079 AUD|Avg: $3,101 AUD|-7.6%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 6, 2026
Retailer 3$2,045 AUD
Retailer 8$2,445 AUD
Retailer 4$2,675 AUD
Retailer 10$2,746 AUD
Retailer 9$2,797 AUD
Retailer 5$2,883 AUD
Retailer 6$2,914 AUD
Retailer 7$2,944 AUD
Retailer 2$3,705 AUD
MOH London$4,691 AUD

24 data points across 10 retailers

10 retailers$2,045 AUD to $4,691 AUD

A
Cheapest Retailer
-
$2,045 AUD
A
Retailer 2
-
$2,445 AUD
View
A
Retailer 3
-
$2,675 AUD
View
Retailer 4
-
$2,746 AUD
View
Price last confirmed 8 days ago
A
Retailer 5
-
$2,797 AUD
View
A
Retailer 6
-
$2,883 AUD
View
A
Retailer 7
-
$2,914 AUD
View
A
Retailer 8
-
$2,944 AUD
View
B+
Retailer 9
-
$3,705 AUD
View
Most Expensive
B+
MOH London
B65DAFE3E · Nov 4
$4,691 AUD
£2,538 GBP
View
9 more retailers have this diamond
Prices start from $2,045 AUDSave up to $2,646 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
$2,045 AUD