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Marquise|Natural|IGI

0.51ct G SI2 Marquise Natural Diamond

VG • G/SI2 • IGI 815681717

Shape and cutting style on the report: Marquise brilliant

Certificate IGI 815681717

Diamond specifications and retailer prices

From $481 SGD
₹35,798 INR
As of October 27, 2026
Save $1,922 SGD (80%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $2,403 SGD at NZ Jewellers · As of October 27, 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 815681717. Listed at 12 retailers as of October 27, 2026, with prices from $481 to $2,403, a $1,922 spread on the same certified stone. NZ Jewellers lists it at $2,403. 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 angle39.6°
Pavilion angle34.8°
OriginNatural
Grading LabIGI
CertificateIGI 815681717
Dimensions9.02 × 4.08 × 2.33 mm
L/W Ratio2.21
Girdle conditionFaceted
Top View
9.02 mm4.08 mm0.51 ctG / SI2
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 815681717
Side View
Table 59.0%Crown 39.6°Girdle: MED-THKPavilion 34.8°Culet: NoneDepth 57.1%

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: Oct 27
Current: $2,403 SGD|Low: $479 SGD|High: $2,403 SGD|Avg: $846 SGD
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
October 28, 2026
Retailer 10$481 SGD
Retailer 5$579 SGD
Retailer 13$627 SGD
Retailer 4$675 SGD
Retailer 11$724 SGD
Retailer 8$753 SGD
Retailer 7$761 SGD
Retailer 9$786 SGD
Retailer 3$795 SGD
Retailer 2$807 SGD
Retailer 6$874 SGD
Retailer 12$1,450 SGD
NZ Jewellers$2,403 SGD

5 data points across 13 retailers

12 retailers$481 SGD to $2,403 SGD

A
Cheapest Retailer
-
$481 SGD
₹35,798 INR
Retailer 2
-
$627 SGD
$490 USD
View
Price last confirmed 7 days ago
Retailer 3
-
$675 SGD
$528 USD
View
Price last confirmed 8 days ago
B+
Retailer 4
-
$724 SGD
$566 USD
View
A
Retailer 5
-
$753 SGD
£464 GBP
View
B+
Retailer 6
-
$761 SGD
$595 USD
View
A
Retailer 7
-
$786 SGD
£484 GBP
View
Retailer 8
-
$795 SGD
$622 USD
View
Price last confirmed 7 days ago
B+
Retailer 9
-
$807 SGD
$631 USD
View
A
Retailer 10
-
$874 SGD
€651 EUR
View
Retailer 11
-
$1,450 SGD
£893 GBP
View
Price last confirmed 7 days ago
Most Expensive
C
NZ Jewellers
5fe76a14-e0cf-40a4-8f00-2a032bf2f2f6 · Oct 27
$2,403 SGD
$1,879 USD
View
11 more retailers have this diamond
Prices start from $481 SGDSave up to $1,922 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
$481 SGD