Cushion|Natural|GIA

0.51ct E SI1 Cushion Natural Diamond

GD • E/SI1 • GIA 2497945497

Certificate GIA 2497945497

Diamond specifications and retailer prices

From $502 USD
As of November 6, 2026
Save $1,115 USD (69%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $1,617 USD 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 $502 to $1,617, a $1,115 spread on the same certified stone. MOH London lists it at $1,617. 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
Color
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
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: $1,617 USD|Low: $502 USD|High: $1,638 USD|Avg: $994 USD|-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$502 USD
Retailer 9$717 USD
Retailer 3$816 USD
Retailer 5$895 USD
Retailer 6$923 USD
Retailer 2$1,013 USD
Retailer 8$1,078 USD
Retailer 4$1,107 USD
MOH London$1,617 USD

44 data points across 9 retailers

12 retailers$502 USD to $1,617 USD

A
Cheapest Retailer
-
$502 USD
Final sale: no returns
Retailer 2
-
$717 USD
View
Price last confirmed 8 days ago
B
Retailer 3
-
$777 USD
View
B
Retailer 4
-
$816 USD
View
B
Retailer 5
-
$849 USD
View
B
Retailer 6
-
$895 USD
View
B
Retailer 7
-
$899 USD
View
B
Retailer 8
-
$923 USD
View
B
Retailer 9
-
$1,013 USD
View
Retailer 10
-
$1,078 USD
View
Price last confirmed 33 days ago
B
Retailer 11
-
$1,107 USD
View
Most Expensive
B
MOH London
BBC1FB3F6 · Nov 4
$1,617 USD
£1,273 GBP
View
11 more retailers have this diamond
Prices start from $502 USDSave up to $1,115 USD

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
$502 USD