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Cushion|Natural|GIA

0.51ct E SI2 Cushion Natural Diamond

GD • E/SI2 • GIA 6521487057

Certificate GIA 6521487057

Diamond specifications and retailer prices

From $430 SGD
$336 USD
As of October 29, 2026
Save $216 SGD (33%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: $645 SGD at 77 Diamonds · As of October 30, 2026
View at 77 Diamonds

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 SI2 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 6521487057. Listed at 4 retailers as of October 29, 2026, with prices from $430 to $645, a $216 spread on the same certified stone. 77 Diamonds lists it at $645. 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
SI2
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6521487057
Dimensions4.69 × 4.34 × 2.95 mm
L/W Ratio1.08
Top View
4.69 mm4.34 mm0.51 ctE / SI2
OriginNatural
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6521487057
Side View
Table 60.0%CrownGirdle: MED-VTKPavilionCulet: NoneDepth 67.9%

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: Oct 29
Current: $645 SGD|Low: $372 SGD|High: $645 SGD|Avg: $501 SGD|+6.6%
77 Diamonds
Retailer 2
Retailer 3
Retailer 4
October 30, 2026
Retailer 2$430 SGD
Retailer 4$455 SGD
Retailer 3$501 SGD
77 Diamonds$645 SGD

40 data points across 4 retailers

4 retailers$430 SGD to $645 SGD

B+
Cheapest Retailer
-
$430 SGD
$336 USD
Final sale: no returns
A
Retailer 2
-
$455 SGD
MYR 1,449 MYR
View
B+
Retailer 3
-
$501 SGD
$392 USD
View
Most Expensive
B+
77 Diamonds
CUSCPKGEJRWZC · Oct 30
$645 SGD
£397 GBP
View
3 more retailers have this diamond
Prices start from $430 SGDSave up to $216 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
$430 SGD