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Marquise|Natural|IGI

0.51ct J SI1 Marquise Natural Diamond

VG • J/SI1 • IGI 754532759

Shape and cutting style on the report: Marquise brilliant

Certificate IGI 754532759

Diamond specifications and retailer prices

From $756 AUD
$530 USD
As of November 1, 2026
Save $1,617 AUD (68%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $2,373 AUD at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

About this 0.51ct natural marquise diamond

This 0.51ct natural marquise 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 754532759. Listed at 11 retailers as of October 30, 2026, with prices from $756 to $2,373, a $1,617 spread on the same certified stone. NZ Jewellers lists it at $2,373. 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
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle32.5°
Pavilion angle41.5°
OriginNatural
Grading LabIGI
CertificateIGI 754532759
Dimensions8.22 × 4.13 × 2.61 mm
L/W Ratio1.99
Girdle conditionFaceted
Top View
8.22 mm4.13 mm0.51 ctJ / SI1
OriginNatural
CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateIGI 754532759
Side View
Table 60.0%Crown 32.5°Girdle: THN-VTKPavilion 41.5°Culet: NoneDepth 63.2%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: $929 AUD|Low: $815 AUD|High: $1,769 AUD|Avg: $1,080 AUD|-1.3%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 2, 2026
Retailer 7$815 AUD
Retailer 8$842 AUD
Retailer 6$863 AUD
Retailer 1$929 AUD
Retailer 2$986 AUD
Retailer 3$1,130 AUD
Retailer 4$1,168 AUD
Retailer 5$1,756 AUD

42 data points across 8 retailers

11 retailers$756 AUD to $2,373 AUD

B+
Cheapest Retailer
-
$756 AUD
$530 USD
B+
Retailer 2
-
$815 AUD
$571 USD
View
B+
Retailer 3
-
$815 AUD
$571 USD
View
B+
Retailer 4
-
$863 AUD
$605 USD
View
B+
Retailer 5
-
$873 AUD
$612 USD
View
B+
Retailer 6
-
$929 AUD
£512 GBP
View
B
Retailer 7
-
$986 AUD
£544 GBP
View
B
Retailer 8
-
$1,130 AUD
€754 EUR
View
B
Retailer 9
-
$1,168 AUD
ZAR 13,219 ZAR
View
C
Retailer 10
-
$1,756 AUD
£969 GBP
View
Most Expensive
C
NZ Jewellers
947aa185-d648-4229-a6f5-ea6f8c1825e0 · Oct 30
$2,373 AUD
$1,663 USD
View
10 more retailers have this diamond
Prices start from $756 AUDSave up to $1,617 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.

B+
0.51ct Marquise
$756 AUD