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Cushion|Natural|IGI

0.40ct K SI1 Cushion Natural Diamond

VG • K/SI1 • IGI 749531733

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

Certificate IGI 749531733

Diamond specifications and retailer prices

From $301 AUD
As of November 6, 2026
Save $697 AUD (70%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: $998 AUD at MOH London · As of November 7, 2026
View at MOH London

About this 0.4ct natural cushion diamond

This 0.4ct natural cushion sits in the sub-half-carat band, graded K colour (faint-tinted) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI 749531733. Listed at 6 retailers as of November 6, 2026, with prices from $301 to $998, a $697 spread on the same certified stone. MOH London lists it at $998. 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

0.40
Carat
K
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle39.1°
Pavilion angle37.3°
OriginNatural
Grading LabIGI
CertificateIGI 749531733
Dimensions4.16 × 4.05 × 2.87 mm
L/W Ratio1.03
Girdle conditionFaceted
Culet sizePointed
Top View
4.16 mm4.05 mm0.40 ctK / SI1
OriginNatural
CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateIGI 749531733
Side View
Table 62.0%Crown 39.1°Girdle: STK-VTKPavilion 37.3°Culet: NoneDepth 70.9%

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: Nov 6
Current: $998 AUD|Low: $301 AUD|High: $1,015 AUD|Avg: $661 AUD|-1.6%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 7, 2026
Retailer 3$301 AUD
Retailer 2$569 AUD
Retailer 6$623 AUD
Retailer 5$675 AUD
Retailer 4$819 AUD
MOH London$998 AUD

38 data points across 6 retailers

6 retailers$301 AUD to $998 AUD

A
Cheapest Retailer
-
$301 AUD
B+
Retailer 2
-
$569 AUD
View
B+
Retailer 3
-
$623 AUD
View
B+
Retailer 4
-
$675 AUD
View
B
Retailer 5
-
$819 AUD
View
Most Expensive
B
MOH London
71F93C1F3 · Nov 7
$998 AUD
£540 GBP
View
5 more retailers have this diamond
Prices start from $301 AUDSave up to $697 AUD

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
0.40ct Cushion
$301 AUD