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Cushion|Natural|GIA

0.51ct E IF Cushion Natural Diamond

GD • E/IF • GIA 6555370030

Certificate GIA 6555370030

Diamond specifications and retailer prices

From $781 SGD
As of November 4, 2026
Save $217 SGD (22%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: $998 SGD at Blue Nile · As of November 3, 2026
View at Blue Nile

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 IF clarity (flawless or internally-flawless), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 6555370030. Listed at 5 retailers as of November 3, 2026, with prices from $781 to $998, a $217 spread on the same certified stone. Blue Nile lists it at $998. 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
IF
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryGood
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6555370030
Dimensions4.50 × 4.41 × 2.98 mm
L/W Ratio1.02
Culet sizeNone
Key to symbols
Minor Details of Polish
Top View
4.50 mm4.41 mm0.51 ctE / IF
OriginNatural
CutGood
PolishExcellent
SymmetryGood
FluorescenceNone
CertificateGIA 6555370030
Side View
Table 64.0%CrownGirdle: MED-VTKPavilionCulet: NoneDepth 67.6%

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 4
Current: $998 SGD|Low: $679 SGD|High: $1,067 SGD|Avg: $882 SGD|-6.5%
Blue Nile
Retailer 2
Retailer 3
Retailer 4
Retailer 5
November 5, 2026
Retailer 5$781 SGD
Retailer 4$791 SGD
Retailer 3$878 SGD
Retailer 2$964 SGD
Blue Nile$998 SGD

41 data points across 5 retailers

5 retailers$781 SGD to $998 SGD

A
Cheapest Retailer
-
$781 SGD
A
Retailer 2
-
$791 SGD
View
Final sale: no returns
A
Retailer 3
-
$878 SGD
View
B+
Retailer 4
-
$964 SGD
View
Most Expensive
A
Blue Nile
29230193 · Nov 3
$998 SGD
$781 USD
View
4 more retailers have this diamond
Prices start from $781 SGDSave up to $217 SGD

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
$781 SGD