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Marquise|Natural|IGI

0.51ct K VS1 Marquise Natural Diamond

VG • K/VS1 • IGI 731559808

Shape and cutting style on the report: Marquise brilliant

Certificate IGI 731559808

Diamond specifications and retailer prices

From $349 AUD
As of November 6, 2026
Save $1,457 AUD (81%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $1,806 AUD at NZ Jewellers · As of November 5, 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 K colour (faint-tinted) and VS1 clarity (very-slightly-included), with a very-good cut grade and certified by IGI 731559808. Listed at 14 retailers as of November 5, 2026, with prices from $349 to $1,806, a $1,457 spread on the same certified stone. NZ Jewellers lists it at $1,806. 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
K
Colour
VS1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.7°
Pavilion angle38.8°
OriginNatural
Grading LabIGI
CertificateIGI 731559808
Dimensions8.12 × 4.34 × 2.54 mm
L/W Ratio1.87
Girdle conditionFaceted
Culet sizePointed
Top View
8.12 mm4.34 mm0.51 ctK / VS1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 731559808
Side View
Table 59.0%Crown 34.7°Girdle: MED-THKPavilion 38.8°Culet: NoneDepth 58.5%

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: $349 AUD|Low: $349 AUD|High: $1,100 AUD|Avg: $701 AUD|-0.8%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 6, 2026
Retailer 1$349 AUD
Retailer 2$543 AUD
Retailer 3$623 AUD
Retailer 4$730 AUD
Retailer 5$786 AUD
Retailer 7$880 AUD
Retailer 6$1,089 AUD

31 data points across 7 retailers

14 retailers$349 AUD to $1,806 AUD

A
Cheapest Retailer
-
$349 AUD
Retailer 2
-
$430 AUD
View
Price last confirmed 95 days ago
A
Retailer 3
-
$471 AUD
View
Retailer 4
-
$507 AUD
View
Price last confirmed 8 days ago
A
Retailer 5
-
$526 AUD
View
A
Retailer 6
-
$543 AUD
View
B+
Retailer 7
-
$623 AUD
View
B+
Retailer 8
-
$634 AUD
View
B+
Retailer 9
-
$657 AUD
View
A
Retailer 10
-
$730 AUD
View
B+
Retailer 11
-
$786 AUD
View
B+
Retailer 12
-
$880 AUD
View
B+
Retailer 13
-
$1,089 AUD
View
Most Expensive
C
NZ Jewellers
ce013447-d670-4d1b-a8b2-5cb0defe77df · Nov 5
$1,806 AUD
$1,264 USD
View
13 more retailers have this diamond
Prices start from $349 AUDSave up to $1,457 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 Marquise
$349 AUD