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Cushion|Natural|GIA

0.51ct E SI1 Cushion Natural Diamond

VG • E/SI1 • GIA 5523919294

Certificate GIA 5523919294

Diamond specifications and retailer prices

From $550 AUD
As of November 6, 2026
Save $1,097 AUD (67%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $1,647 AUD at MOH London · As of November 4, 2026
View at MOH London

About this 0.51ct natural cushion diamond

This 0.51ct natural cushion sits in the half to three-quarter 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 5523919294. Listed at 21 retailers as of November 4, 2026, with prices from $550 to $1,647, a $1,097 spread on the same certified stone. MOH London lists it at $1,647. 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

0.51
Carat
E
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle35.3°
Pavilion angle34°
OriginNatural
Grading LabGIA
CertificateGIA 5523919294
Dimensions4.65 × 4.34 × 2.97 mm
L/W Ratio1.07
Top View
4.65 mm4.34 mm0.51 ctE / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 5523919294
Side View
Table 60.0%Crown 35.3°Girdle: MED-VTKPavilion 34°Culet: NoneDepth 68.4%

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: Nov 6
Current: $1,647 AUD|Low: $550 AUD|High: $1,747 AUD|Avg: $882 AUD|-5.7%
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
Retailer 17
Retailer 18
Retailer 19
November 6, 2026
Retailer 10$550 AUD
Retailer 5$597 AUD
Retailer 11$640 AUD
Retailer 15$640 AUD
Retailer 7$669 AUD
Retailer 9$745 AUD
Retailer 4$783 AUD
Retailer 8$800 AUD
Retailer 16$800 AUD
Retailer 6$805 AUD
Retailer 17$830 AUD
Retailer 2$870 AUD
Retailer 13$882 AUD
Retailer 18$894 AUD
Retailer 19$902 AUD
Retailer 3$953 AUD
Retailer 12$963 AUD
Retailer 14$1,106 AUD
MOH London$1,647 AUD

28 data points across 19 retailers

21 retailers$550 AUD to $1,647 AUD

A
Cheapest Retailer
-
$550 AUD
A
Retailer 2
-
$597 AUD
View
Final sale: no returns
Retailer 3
-
$640 AUD
View
Price last confirmed 16 days ago
A
Retailer 4
-
$640 AUD
View
A
Retailer 5
-
$669 AUD
View
Retailer 6
-
$729 AUD
View
Price last confirmed 8 days ago
A
Retailer 7
-
$745 AUD
View
A
Retailer 8
-
$783 AUD
View
A
Retailer 9
-
$800 AUD
View
A
Retailer 10
-
$800 AUD
View
A
Retailer 11
-
$805 AUD
View
A
Retailer 12
-
$830 AUD
View
A
Retailer 13
-
$870 AUD
View
B+
Retailer 14
-
$882 AUD
View
B+
Retailer 15
-
$894 AUD
View
B+
Retailer 16
-
$902 AUD
View
B+
Retailer 17
-
$953 AUD
View
B+
Retailer 18
-
$963 AUD
View
B+
Retailer 19
-
$1,106 AUD
View
Retailer 20
-
$1,124 AUD
View
Price last confirmed 34 days ago
Most Expensive
B
MOH London
CCAFD69D2 · Nov 4
$1,647 AUD
£891 GBP
View
20 more retailers have this diamond
Prices start from $550 AUDSave up to $1,097 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
0.51ct Cushion
$550 AUD