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Cushion|Natural|IGI

0.51ct I SI1 Cushion Natural Diamond

VG • I/SI1 • IGI 749531621

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI 749531621

Diamond specifications and retailer prices

From $452 AUD
₹30,188 INR
As of November 2, 2026
Save $968 AUD (68%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: $1,421 AUD 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 I colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI 749531621. Listed at 7 retailers as of November 1, 2026, with prices from $452 to $1,421, a $968 spread on the same certified stone. MOH London lists it at $1,421. 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
I
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishVery Good
SymmetryGood
FluorescenceFaint
Crown angle35.3°
Pavilion angle36.8°
OriginNatural
Grading LabIGI
CertificateIGI 749531621
Dimensions4.70 × 4.29 × 3.06 mm
L/W Ratio1.10
Girdle conditionFaceted
Culet sizeNone
Top View
4.70 mm4.29 mm0.51 ctI / SI1
OriginNatural
CutVery Good
PolishVery Good
SymmetryGood
FluorescenceFaint
CertificateIGI 749531621
Side View
Table 58.0%Crown 35.3°Girdle: STK-VTKPavilion 36.8°Culet: NoneDepth 71.3%

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 2
Current: $1,421 AUD|Low: $451 AUD|High: $1,473 AUD|Avg: $887 AUD|-2.7%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 3, 2026
Retailer 3$452 AUD
Retailer 2$793 AUD
Retailer 6$802 AUD
Retailer 7$861 AUD
Retailer 4$936 AUD
Retailer 5$949 AUD
MOH London$1,421 AUD

42 data points across 7 retailers

7 retailers$452 AUD to $1,421 AUD

A
Cheapest Retailer
-
$452 AUD
₹30,188 INR
B+
Retailer 2
-
$793 AUD
£437 GBP
View
B+
Retailer 3
-
$802 AUD
$562 USD
View
B
Retailer 4
-
$861 AUD
$603 USD
View
B
Retailer 5
-
$936 AUD
€625 EUR
View
B
Retailer 6
-
$949 AUD
ZAR 10,749 ZAR
View
Most Expensive
B
MOH London
C3E14B904 · Nov 1
$1,421 AUD
£784 GBP
View
6 more retailers have this diamond
Prices start from $452 AUDSave up to $968 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
0.51ct Cushion
$452 AUD