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Cushion|Natural|GIA

1.51ct E SI1 Cushion Natural Diamond

EX • E/SI1 • GIA 6405967587

Certificate GIA 6405967587

Diamond specifications and retailer prices

From $7,596 AUD
As of November 6, 2026
Save $7,300 AUD (49%) vs most expensive(unlock to see where)
25 retailers carry this diamond
Most expensive: $14,896 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 E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6405967587. Listed at 25 retailers as of November 4, 2026, with prices from $7,596 to $14,896, a $7,300 spread on the same certified stone. MOH London lists it at $14,896. 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
E
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 6405967587
Dimensions6.51 × 6.05 × 4.51 mm
L/W Ratio1.08
Top View
6.51 mm6.05 mm1.51 ctE / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 6405967587
Side View
Table 60.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 74.6%

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: $14,896 AUD|Low: $7,997 AUD|High: $15,116 AUD|Avg: $10,319 AUD|-1.2%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 6, 2026
Retailer 8$7,997 AUD
Retailer 6$8,011 AUD
Retailer 9$8,086 AUD
Retailer 2$9,434 AUD
Retailer 4$9,627 AUD
Retailer 7$9,840 AUD
Retailer 3$11,014 AUD
Retailer 5$12,369 AUD
MOH London$14,896 AUD

34 data points across 9 retailers

25 retailers$7,596 AUD to $14,896 AUD

A
Cheapest Retailer
-
$7,596 AUD
A
Retailer 2
-
$7,920 AUD
View
Retailer 3
-
$7,997 AUD
View
Price last confirmed 9 days ago
A
Retailer 4
-
$8,011 AUD
View
A
Retailer 5
-
$8,086 AUD
View
Final sale: no returns
A
Retailer 6
-
$8,117 AUD
View
A
Retailer 7
-
$8,485 AUD
View
A
Retailer 8
-
$8,543 AUD
View
A
Retailer 9
-
$8,626 AUD
View
Retailer 10
-
$9,185 AUD
View
Price last confirmed 8 days ago
B+
Retailer 11
-
$9,434 AUD
View
B+
Retailer 12
-
$9,555 AUD
View
B+
Retailer 13
-
$9,627 AUD
View
B+
Retailer 14
-
$9,687 AUD
View
Retailer 15
-
$9,840 AUD
View
Price last confirmed 15 days ago
B+
Retailer 16
-
$10,217 AUD
View
B+
Retailer 17
-
$10,217 AUD
View
B+
Retailer 18
-
$10,566 AUD
View
B+
Retailer 19
-
$11,014 AUD
View
Retailer 20
-
$11,175 AUD
View
Price last confirmed 14 days ago
B
Retailer 21
-
$11,490 AUD
View
B
Retailer 22
-
$11,614 AUD
View
B+
Retailer 23
-
$12,369 AUD
View
B
Retailer 24
-
$14,697 AUD
View
Most Expensive
B
MOH London
A7CF1D2F7 · Nov 4
$14,896 AUD
£8,059 GBP
View
24 more retailers have this diamond
Prices start from $7,596 AUDSave up to $7,300 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
$7,596 AUD