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Marquise|Natural|IGI

0.51ct I SI1 Marquise Natural Diamond

EX • I/SI1 • IGI 839658603

Shape and cutting style on the report: Marquise brilliant

Certificate IGI 839658603

Diamond specifications and retailer prices

From $466 SGD
₹34,669 INR
As of October 31, 2026
Save $1,877 SGD (80%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $2,343 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 I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI 839658603. Listed at 12 retailers as of October 30, 2026, with prices from $466 to $2,343, a $1,877 spread on the same certified stone. NZ Jewellers lists it at $2,343. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

0.51
Carat
I
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.3°
Pavilion angle39.5°
OriginNatural
Grading LabIGI
CertificateIGI 839658603
Dimensions8.28 × 4.16 × 2.59 mm
L/W Ratio1.99
Girdle conditionFaceted
Top View
8.28 mm4.16 mm0.51 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 839658603
Side View
Table 60.0%Crown 37.3°Girdle: MED-STKPavilion 39.5°Culet: NoneDepth 62.3%

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 31
Current: $2,343 SGD|Low: $464 SGD|High: $2,343 SGD|Avg: $859 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 31, 2026
Retailer 2$466 SGD
Retailer 3$563 SGD
Retailer 5$582 SGD
Retailer 13$611 SGD
Retailer 11$659 SGD
Retailer 4$706 SGD
Retailer 8$753 SGD
Retailer 12$794 SGD
Retailer 6$800 SGD
Retailer 7$851 SGD
Retailer 10$869 SGD
Retailer 9$1,413 SGD
NZ Jewellers$2,343 SGD

14 data points across 13 retailers

12 retailers$466 SGD to $2,343 SGD

A
Cheapest Retailer
-
$466 SGD
₹34,669 INR
Retailer 2
-
$582 SGD
$455 USD
View
Price last confirmed 15 days ago
A
Retailer 3
-
$611 SGD
$478 USD
View
A
Retailer 4
-
$659 SGD
$515 USD
View
A
Retailer 5
-
$706 SGD
$552 USD
View
A
Retailer 6
-
$753 SGD
£463 GBP
View
B+
Retailer 7
-
$794 SGD
$621 USD
View
B+
Retailer 8
-
$800 SGD
£493 GBP
View
B+
Retailer 9
-
$851 SGD
€634 EUR
View
B+
Retailer 10
-
$869 SGD
$680 USD
View
Retailer 11
-
$1,413 SGD
£870 GBP
View
Price last confirmed 7 days ago
Most Expensive
B
NZ Jewellers
8931b356-73f5-4507-8694-f0697f6376fd · Oct 30
$2,343 SGD
$1,832 USD
View
11 more retailers have this diamond
Prices start from $466 SGDSave up to $1,877 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
$466 SGD