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Marquise|Natural|IGI

0.51ct G SI2 Marquise Natural Diamond

VG • G/SI2 • IGI 815673453

Shape and cutting style on the report: Marquise brilliant

Certificate IGI 815673453

Diamond specifications and retailer prices

From $877 NZD
₹46,991 INR
As of November 2, 2026
Save $2,765 NZD (76%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $3,642 NZD at NZ Jewellers · As of November 3, 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 G colour (near-colourless) and SI2 clarity (slightly-included), with a very-good cut grade and certified by IGI 815673453. Listed at 12 retailers as of November 2, 2026, with prices from $877 to $3,642, a $2,765 spread on the same certified stone. NZ Jewellers lists it at $3,642. 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
G
Colour
SI2
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.3°
Pavilion angle39.6°
OriginNatural
Grading LabIGI
CertificateIGI 815673453
Dimensions7.82 × 4.19 × 2.67 mm
L/W Ratio1.87
Girdle conditionFaceted
Top View
7.82 mm4.19 mm0.51 ctG / SI2
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 815673453
Side View
Table 57.0%Crown 33.3°Girdle: MED-THKPavilion 39.6°Culet: NoneDepth 63.7%

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 2
Current: $3,642 NZD|Low: $877 NZD|High: $3,771 NZD|Avg: $1,608 NZD|-3.4%
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 2, 2026
Retailer 2$877 NZD
Retailer 13$1,070 NZD
Retailer 9$1,161 NZD
Retailer 11$1,161 NZD
Retailer 10$1,207 NZD
Retailer 12$1,340 NZD
Retailer 4$1,396 NZD
Retailer 5$1,404 NZD
Retailer 3$1,429 NZD
Retailer 8$1,455 NZD
Retailer 6$1,583 NZD
Retailer 7$2,682 NZD
NZ Jewellers$3,642 NZD

40 data points across 13 retailers

12 retailers$877 NZD to $3,642 NZD

A
Cheapest Retailer
-
$877 NZD
₹46,991 INR
B+
Retailer 2
-
$1,070 NZD
$602 USD
View
Final sale: no returns
B+
Retailer 3
-
$1,161 NZD
$653 USD
View
B+
Retailer 4
-
$1,161 NZD
$653 USD
View
B+
Retailer 5
-
$1,207 NZD
$679 USD
View
B+
Retailer 6
-
$1,340 NZD
$754 USD
View
B+
Retailer 7
-
$1,396 NZD
$785 USD
View
B+
Retailer 8
-
$1,429 NZD
$804 USD
View
B+
Retailer 9
-
$1,455 NZD
£645 GBP
View
B+
Retailer 10
-
$1,583 NZD
€848 EUR
View
B
Retailer 11
-
$2,682 NZD
£1,188 GBP
View
Most Expensive
C
NZ Jewellers
e02205bb-7729-4121-9a6a-7e8c4dbfe1db · Nov 3
$3,642 NZD
$2,049 USD
View
11 more retailers have this diamond
Prices start from $877 NZDSave up to $2,765 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.

A
0.51ct Marquise
$877 NZD