CaratHunter
Plans
Cushion|Natural|IGI

0.51ct J SI1 Cushion Natural Diamond

VG • J/SI1 • IGI 749531713

Shape and cutting style on the report: Square cushion modified brilliant

Certificate IGI 749531713

Diamond specifications and retailer prices

From $289 USD
As of November 6, 2026
Save $636 USD (69%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: $925 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 J colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI 749531713. Listed at 7 retailers as of November 4, 2026, with prices from $289 to $925, a $636 spread on the same certified stone. MOH London lists it at $925. 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
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle34.1°
Pavilion angle31.6°
OriginNatural
Grading LabIGI
CertificateIGI 749531713
Dimensions4.48 × 4.39 × 2.89 mm
L/W Ratio1.02
Girdle conditionFaceted
Culet sizeNone
Top View
4.48 mm4.39 mm0.51 ctJ / SI1
OriginNatural
CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateIGI 749531713
Side View
Table 63.0%Crown 34.1°Girdle: STK-VTKPavilion 31.6°Culet: NoneDepth 65.8%

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: $925 USD|Low: $289 USD|High: $960 USD|Avg: $596 USD|-3.6%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 6, 2026
Retailer 2$289 USD
Retailer 6$531 USD
Retailer 4$538 USD
Retailer 7$556 USD
Retailer 5$621 USD
Retailer 3$722 USD
MOH London$925 USD

41 data points across 7 retailers

7 retailers$289 USD to $925 USD

A
Cheapest Retailer
-
$289 USD
B+
Retailer 2
-
$531 USD
View
B+
Retailer 3
-
$538 USD
View
B+
Retailer 4
-
$556 USD
View
B+
Retailer 5
-
$621 USD
View
B
Retailer 6
-
$722 USD
View
Most Expensive
B
MOH London
DB7F122AF · Nov 4
$925 USD
£728 GBP
View
6 more retailers have this diamond
Prices start from $289 USDSave up to $636 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
$289 USD