CaratHunter
Plans
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 $942 NZD
$530 USD
As of November 1, 2026
Save $2,014 NZD (68%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $2,956 NZD 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 $942 to $2,956, a $2,014 spread on the same certified stone. NZ Jewellers lists it at $2,956. 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: $1,157 NZD|Low: $1,015 NZD|High: $2,203 NZD|Avg: $1,345 NZD|-1.3%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 2, 2026
Retailer 7$1,015 NZD
Retailer 8$1,049 NZD
Retailer 6$1,075 NZD
Retailer 1$1,157 NZD
Retailer 2$1,228 NZD
Retailer 3$1,407 NZD
Retailer 4$1,454 NZD
Retailer 5$2,187 NZD

42 data points across 8 retailers

11 retailers$942 NZD to $2,956 NZD

B+
Cheapest Retailer
-
$942 NZD
$530 USD
B+
Retailer 2
-
$1,015 NZD
$571 USD
View
B+
Retailer 3
-
$1,015 NZD
$571 USD
View
B+
Retailer 4
-
$1,075 NZD
$605 USD
View
B+
Retailer 5
-
$1,088 NZD
$612 USD
View
B+
Retailer 6
-
$1,157 NZD
£512 GBP
View
B
Retailer 7
-
$1,228 NZD
£544 GBP
View
B
Retailer 8
-
$1,407 NZD
€754 EUR
View
B
Retailer 9
-
$1,454 NZD
ZAR 13,219 ZAR
View
C
Retailer 10
-
$2,187 NZD
£969 GBP
View
Most Expensive
C
NZ Jewellers
947aa185-d648-4229-a6f5-ea6f8c1825e0 · Oct 30
$2,956 NZD
$1,663 USD
View
10 more retailers have this diamond
Prices start from $942 NZDSave up to $2,014 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.

B+
0.51ct Marquise
$942 NZD