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Cushion|Natural|IGI

0.51ct J SI1 Cushion Natural Diamond

VG • J/SI1 • IGI 720529895

Shape and cutting style on the report: Marquise brilliant

Certificate IGI 720529895

Diamond specifications and retailer prices

From $259 USD
As of November 6, 2026
Save $549 USD (68%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $808 USD at MOH London · As of November 1, 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 J colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI 720529895. Listed at 9 retailers as of November 1, 2026, with prices from $259 to $808, a $549 spread on the same certified stone. MOH London lists it at $808. 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
J
Color
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle31.6°
Pavilion angle40.3°
OriginNatural
Grading LabIGI
CertificateIGI 720529895
Dimensions9.05 × 4.14 × 2.42 mm
L/W Ratio2.19
Girdle conditionFaceted
Culet sizePointed
Top View
9.05 mm4.14 mm0.51 ctJ / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 720529895
Side View
Table 62.0%Crown 31.6°Girdle: THN-STKPavilion 40.3°Culet: NoneDepth 58.5%

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: $808 USD|Low: $259 USD|High: $817 USD|Avg: $504 USD|-1.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 6, 2026
Retailer 2$259 USD
Retailer 3$427 USD
Retailer 5$465 USD
Retailer 7$542 USD
Retailer 6$570 USD
Retailer 4$643 USD
MOH London$808 USD

28 data points across 7 retailers

9 retailers$259 USD to $808 USD

A
Cheapest Retailer
-
$259 USD
Retailer 2
-
$377 USD
View
Price last confirmed 9 days ago
A
Retailer 3
-
$427 USD
View
B+
Retailer 4
-
$465 USD
View
B+
Retailer 5
-
$480 USD
View
B+
Retailer 6
-
$542 USD
View
B+
Retailer 7
-
$570 USD
View
B+
Retailer 8
-
$643 USD
View
Most Expensive
B
MOH London
48F9D8D51 · Nov 1
$808 USD
£636 GBP
View
8 more retailers have this diamond
Prices start from $259 USDSave up to $549 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
$259 USD