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Marquise|Natural|GIA

0.51ct J SI1 Marquise Natural Diamond

ID • J/SI1 • GIA 6335211635

Certificate GIA 6335211635

Diamond specifications and retailer prices

From $737 SGD
HK$4,500 HKD
As of November 1, 2026
Save $1,272 SGD (63%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $2,729 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 J colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6335211635. Listed at 17 retailers as of November 1, 2026, with a 173% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
J
Colour
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishVery Good
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 6335211635
Dimensions6.92 × 4.43 × 2.69 mm
L/W Ratio1.56
Top View
6.92 mm4.43 mm0.51 ctJ / SI1
OriginNatural
CutIdeal
PolishVery Good
SymmetryVery Good
FluorescenceFaint
CertificateGIA 6335211635
Side View
Table 60.0%CrownGirdle: Very ThickPavilionCulet: NoneDepth 60.7%

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 1
Current: $2,729 SGD|Low: $735 SGD|High: $2,729 SGD|Avg: $1,133 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
Retailer 14
Retailer 15
Retailer 16
Retailer 17
November 2, 2026
Retailer 7$737 SGD
Retailer 8$761 SGD
Retailer 6$780 SGD
Retailer 3$803 SGD
Retailer 15$870 SGD
Retailer 16$870 SGD
Retailer 14$904 SGD
Retailer 17$1,004 SGD
Retailer 4$1,022 SGD
Retailer 9$1,039 SGD
Retailer 10$1,065 SGD
Retailer 2$1,068 SGD
Retailer 5$1,106 SGD
Retailer 12$1,238 SGD
Retailer 13$1,343 SGD
Retailer 11$2,009 SGD
NZ Jewellers$2,729 SGD

26 data points across 17 retailers

17 retailers$737 SGD to $2,009 SGD

A
Cheapest Retailer
-
$737 SGD
HK$4,500 HKD
B+
Retailer 2
-
$780 SGD
$610 USD
View
B+
Retailer 3
-
$803 SGD
$628 USD
View
Final sale: no returns
B+
Retailer 4
-
$870 SGD
$680 USD
View
B+
Retailer 5
-
$870 SGD
$680 USD
View
B+
Retailer 6
-
$904 SGD
$707 USD
View
B+
Retailer 7
-
$905 SGD
View
B
Retailer 8
-
$1,004 SGD
$785 USD
View
B
Retailer 9
-
$1,022 SGD
$799 USD
View
B
Retailer 10
-
$1,039 SGD
$813 USD
View
B
Retailer 11
-
$1,065 SGD
£656 GBP
View
B+
Retailer 12
-
$1,068 SGD
£658 GBP
View
B
Retailer 13
-
$1,106 SGD
$865 USD
View
B
Retailer 14
-
$1,238 SGD
€922 EUR
View
B
Retailer 15
-
$1,343 SGD
ZAR 16,968 ZAR
View
B
Retailer 16
-
$2,009 SGD
£1,237 GBP
View
Most Expensive
NZ Jewellers
8cb642c9-93eb-4818-901d-5b6b7c670ec0 · Oct 30
$2,729 SGD
$2,134 USD
View
Price under review
16 more retailers have this diamond
Prices start from $737 SGDSave up to $1,272 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
$737 SGD