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Cushion|Natural|GIA

0.51ct E SI1 Cushion Natural Diamond

GD • E/SI1 • GIA 2497945497

Certificate GIA 2497945497

Diamond specifications and retailer prices

From $731 AUD
As of November 6, 2026
Save $1,622 AUD (69%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $2,353 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 standard cut grade stated by the retailer rather than the lab and certified by GIA 2497945497. Listed at 12 retailers as of November 4, 2026, with prices from $731 to $2,353, a $1,622 spread on the same certified stone. MOH London lists it at $2,353. 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
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2497945497
Dimensions5.28 × 4.19 × 2.94 mm
L/W Ratio1.26
Top View
5.28 mm4.19 mm0.51 ctE / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 2497945497
Side View
Table 59.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 70.2%

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: $2,353 AUD|Low: $731 AUD|High: $2,384 AUD|Avg: $1,446 AUD|-0.2%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 6, 2026
Retailer 7$731 AUD
Retailer 9$1,044 AUD
Retailer 3$1,188 AUD
Retailer 5$1,303 AUD
Retailer 6$1,343 AUD
Retailer 2$1,474 AUD
Retailer 8$1,569 AUD
Retailer 4$1,611 AUD
MOH London$2,353 AUD

44 data points across 9 retailers

12 retailers$731 AUD to $2,353 AUD

A
Cheapest Retailer
-
$731 AUD
Final sale: no returns
Retailer 2
-
$1,044 AUD
View
Price last confirmed 8 days ago
B
Retailer 3
-
$1,131 AUD
View
B
Retailer 4
-
$1,188 AUD
View
B
Retailer 5
-
$1,236 AUD
View
B
Retailer 6
-
$1,303 AUD
View
B
Retailer 7
-
$1,308 AUD
View
B
Retailer 8
-
$1,343 AUD
View
B
Retailer 9
-
$1,474 AUD
View
Retailer 10
-
$1,569 AUD
View
Price last confirmed 33 days ago
B
Retailer 11
-
$1,611 AUD
View
Most Expensive
B
MOH London
BBC1FB3F6 · Nov 4
$2,353 AUD
£1,273 GBP
View
11 more retailers have this diamond
Prices start from $731 AUDSave up to $1,622 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
$731 AUD