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Cushion|Natural|GIA

1.51ct E SI1 Cushion Natural Diamond

VG • E/SI1 • GIA 5146246930

Certificate GIA 5146246930

Diamond specifications and retailer prices

From $8,747 AUD
As of November 6, 2026
Save $6,520 AUD (43%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $15,267 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 very-good cut grade stated by the retailer rather than the lab and certified by GIA 5146246930. Listed at 17 retailers as of November 4, 2026, with prices from $8,747 to $15,267, a $6,520 spread on the same certified stone. MOH London lists it at $15,267. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.51
Carat
E
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 5146246930
Dimensions6.53 × 6.18 × 4.32 mm
L/W Ratio1.06
Top View
6.53 mm6.18 mm1.51 ctE / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 5146246930
Side View
Table 57.0%CrownGirdle: THN-VTKPavilionCulet: NoneDepth 69.9%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: $15,267 AUD|Low: $7,896 AUD|High: $16,079 AUD|Avg: $11,235 AUD|-4.8%
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
Retailer 15
Retailer 16
November 6, 2026
Retailer 16$7,896 AUD
Retailer 12$8,747 AUD
Retailer 7$8,842 AUD
Retailer 13$9,269 AUD
Retailer 14$9,414 AUD
Retailer 2$9,668 AUD
Retailer 10$9,866 AUD
Retailer 15$9,964 AUD
Retailer 3$10,464 AUD
Retailer 5$10,464 AUD
Retailer 4$10,814 AUD
Retailer 8$10,991 AUD
Retailer 9$11,291 AUD
Retailer 11$12,678 AUD
Retailer 6$15,065 AUD
MOH London$15,267 AUD

30 data points across 16 retailers

17 retailers$8,747 AUD to $15,267 AUD

Retailer 1
-
$7,896 AUD
Price last confirmed 9 days ago
B+
Retailer 2
-
$8,747 AUD
View
B+
Retailer 3
-
$8,842 AUD
View
B+
Retailer 4
-
$9,269 AUD
View
Retailer 5
-
$9,414 AUD
View
Price last confirmed 8 days ago
B+
Retailer 6
-
$9,668 AUD
View
B+
Retailer 7
-
$9,866 AUD
View
B+
Retailer 8
-
$9,964 AUD
View
B+
Retailer 9
-
$10,464 AUD
View
B+
Retailer 10
-
$10,464 AUD
View
B+
Retailer 11
-
$10,814 AUD
View
Retailer 12
-
$10,991 AUD
View
Price last confirmed 15 days ago
B+
Retailer 13
-
$11,291 AUD
View
Retailer 14
-
$12,560 AUD
View
Price last confirmed 14 days ago
B+
Retailer 15
-
$12,678 AUD
View
B
Retailer 16
-
$15,065 AUD
View
Most Expensive
B
MOH London
6CF334A13 · Nov 4
$15,267 AUD
£8,260 GBP
View
16 more retailers have this diamond
Prices start from $8,747 AUDSave up to $6,520 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.

B+
1.51ct Cushion
$8,747 AUD