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Marquise|Natural|IGI

0.51ct K VS1 Marquise Natural Diamond

VG • K/VS1 • IGI 815673838

Shape and cutting style on the report: Marquise brilliant

Certificate IGI 815673838

Diamond specifications and retailer prices

From $743 AUD
As of November 5, 2026
Save $1,587 AUD (68%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $2,330 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 815673838. Listed at 13 retailers as of November 5, 2026, with prices from $743 to $2,330, a $1,587 spread on the same certified stone. NZ Jewellers lists it at $2,330. 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
PolishVery Good
SymmetryVery Good
FluorescenceFaint
Crown angle33.6°
Pavilion angle37.2°
OriginNatural
Grading LabIGI
CertificateIGI 815673838
Dimensions8.34 × 4.30 × 2.47 mm
L/W Ratio1.94
Girdle conditionFaceted
Top View
8.34 mm4.30 mm0.51 ctK / VS1
OriginNatural
CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceFaint
CertificateIGI 815673838
Side View
Table 62.0%Crown 33.6°Girdle: MED-THKPavilion 37.2°Culet: NoneDepth 57.4%

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 5
Current: $2,330 AUD|Low: $743 AUD|High: $2,330 AUD|Avg: $1,086 AUD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
November 6, 2026
Retailer 13$743 AUD
Retailer 11$800 AUD
Retailer 12$800 AUD
Retailer 2$857 AUD
Retailer 3$857 AUD
Retailer 5$930 AUD
Retailer 7$957 AUD
Retailer 4$974 AUD
Retailer 6$1,017 AUD
Retailer 10$1,029 AUD
Retailer 8$1,151 AUD
Retailer 9$1,714 AUD
NZ Jewellers$2,330 AUD

38 data points across 13 retailers

13 retailers$743 AUD to $2,330 AUD

A
Cheapest Retailer
-
$743 AUD
Retailer 2
-
$800 AUD
View
Price last confirmed 8 days ago
B+
Retailer 3
-
$800 AUD
View
B+
Retailer 4
-
$857 AUD
View
B+
Retailer 5
-
$857 AUD
View
B+
Retailer 6
-
$930 AUD
View
B+
Retailer 7
-
$957 AUD
View
B+
Retailer 8
-
$974 AUD
View
B+
Retailer 9
-
$1,017 AUD
View
B
Retailer 10
-
$1,029 AUD
View
B
Retailer 11
-
$1,151 AUD
View
B
Retailer 12
-
$1,714 AUD
View
Most Expensive
C
NZ Jewellers
212d9077-4586-4838-a71f-3e623eaf8711 · Nov 5
$2,330 AUD
$1,631 USD
View
12 more retailers have this diamond
Prices start from $743 AUDSave up to $1,587 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
$743 AUD