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Cushion|Natural|IGI

0.51ct E SI1 Cushion Natural Diamond

VG • E/SI1 • IGI 749531709

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

Certificate IGI 749531709

Diamond specifications and retailer prices

From $689 NZD
As of November 6, 2026
Save $1,490 NZD (68%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: $2,179 NZD at MOH London · As of November 2, 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 very-good cut grade and certified by IGI 749531709. Listed at 7 retailers as of November 2, 2026, with prices from $689 to $2,179, a $1,490 spread on the same certified stone. MOH London lists it at $2,179. 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
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle38.7°
Pavilion angle34.4°
OriginNatural
Grading LabIGI
CertificateIGI 749531709
Dimensions4.71 × 4.67 × 2.79 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Top View
4.71 mm4.67 mm0.51 ctE / SI1
OriginNatural
CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateIGI 749531709
Side View
Table 66.0%Crown 38.7°Girdle: MED-VTKPavilion 34.4°Culet: NoneDepth 59.7%

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: $2,179 NZD|Low: $689 NZD|High: $2,204 NZD|Avg: $1,323 NZD|-1.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 6, 2026
Retailer 2$689 NZD
Retailer 7$1,180 NZD
Retailer 6$1,182 NZD
Retailer 4$1,209 NZD
Retailer 3$1,402 NZD
Retailer 5$1,463 NZD
MOH London$2,179 NZD

38 data points across 7 retailers

7 retailers$689 NZD to $2,179 NZD

A
Cheapest Retailer
-
$689 NZD
B+
Retailer 2
-
$1,180 NZD
View
B+
Retailer 3
-
$1,182 NZD
View
B+
Retailer 4
-
$1,209 NZD
View
B
Retailer 5
-
$1,402 NZD
View
B
Retailer 6
-
$1,463 NZD
View
Most Expensive
B
MOH London
3DB22616A · Nov 2
$2,179 NZD
£951 GBP
View
6 more retailers have this diamond
Prices start from $689 NZDSave up to $1,490 NZD

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
$689 NZD