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 $520 USD
As of November 5, 2026
Save $1,111 USD (68%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $1,631 USD 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 $520 to $1,631, a $1,111 spread on the same certified stone. NZ Jewellers lists it at $1,631. 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
Color
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
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: $1,631 USD|Low: $520 USD|High: $1,631 USD|Avg: $761 USD
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$520 USD
Retailer 11$560 USD
Retailer 12$560 USD
Retailer 2$600 USD
Retailer 3$600 USD
Retailer 5$651 USD
Retailer 7$670 USD
Retailer 4$682 USD
Retailer 6$712 USD
Retailer 10$720 USD
Retailer 8$806 USD
Retailer 9$1,200 USD
NZ Jewellers$1,631 USD

38 data points across 13 retailers

13 retailers$520 USD to $1,631 USD

A
Cheapest Retailer
-
$520 USD
Retailer 2
-
$560 USD
View
Price last confirmed 8 days ago
B+
Retailer 3
-
$560 USD
View
B+
Retailer 4
-
$600 USD
View
B+
Retailer 5
-
$600 USD
View
B+
Retailer 6
-
$651 USD
View
B+
Retailer 7
-
$670 USD
View
B+
Retailer 8
-
$682 USD
View
B+
Retailer 9
-
$712 USD
View
B
Retailer 10
-
$720 USD
View
B
Retailer 11
-
$806 USD
View
B
Retailer 12
-
$1,200 USD
View
Most Expensive
C
NZ Jewellers
212d9077-4586-4838-a71f-3e623eaf8711 · Nov 5
$1,631 USD
View
12 more retailers have this diamond
Prices start from $520 USDSave up to $1,111 USD

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
$520 USD