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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 $631 SGD
₹46,991 INR
As of November 2, 2026
Save $1,989 SGD (76%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $2,619 SGD 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 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 October 30, 2026, with prices from $631 to $2,619, a $1,989 spread on the same certified stone. NZ Jewellers lists it at $2,619. 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
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 2
Current: $2,619 SGD|Low: $631 SGD|High: $2,713 SGD|Avg: $1,157 SGD|-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$631 SGD
Retailer 13$770 SGD
Retailer 9$835 SGD
Retailer 11$835 SGD
Retailer 10$868 SGD
Retailer 12$964 SGD
Retailer 4$1,004 SGD
Retailer 5$1,010 SGD
Retailer 3$1,028 SGD
Retailer 8$1,047 SGD
Retailer 6$1,138 SGD
Retailer 7$1,929 SGD
NZ Jewellers$2,619 SGD

41 data points across 13 retailers

12 retailers$631 SGD to $2,619 SGD

A
Cheapest Retailer
-
$631 SGD
₹46,991 INR
B+
Retailer 2
-
$770 SGD
$602 USD
View
Final sale: no returns
B+
Retailer 3
-
$835 SGD
$653 USD
View
B+
Retailer 4
-
$835 SGD
$653 USD
View
B+
Retailer 5
-
$868 SGD
$679 USD
View
B+
Retailer 6
-
$964 SGD
$754 USD
View
B+
Retailer 7
-
$1,004 SGD
$785 USD
View
B+
Retailer 8
-
$1,028 SGD
$804 USD
View
B+
Retailer 9
-
$1,047 SGD
£645 GBP
View
B+
Retailer 10
-
$1,138 SGD
€848 EUR
View
B
Retailer 11
-
$1,929 SGD
£1,188 GBP
View
Most Expensive
C
NZ Jewellers
e02205bb-7729-4121-9a6a-7e8c4dbfe1db · Oct 30
$2,619 SGD
$2,049 USD
View
11 more retailers have this diamond
Prices start from $631 SGDSave up to $1,989 SGD

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
$631 SGD