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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 $1,024 NZD
HK$4,500 HKD
As of November 1, 2026
Save $1,768 NZD (63%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $3,793 NZD 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: $3,793 NZD|Low: $1,022 NZD|High: $3,793 NZD|Avg: $1,575 NZD
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$1,024 NZD
Retailer 8$1,057 NZD
Retailer 6$1,084 NZD
Retailer 3$1,116 NZD
Retailer 15$1,209 NZD
Retailer 16$1,209 NZD
Retailer 14$1,257 NZD
Retailer 17$1,395 NZD
Retailer 4$1,420 NZD
Retailer 9$1,444 NZD
Retailer 10$1,480 NZD
Retailer 2$1,485 NZD
Retailer 5$1,537 NZD
Retailer 12$1,721 NZD
Retailer 13$1,867 NZD
Retailer 11$2,792 NZD
NZ Jewellers$3,793 NZD

26 data points across 17 retailers

17 retailers$1,024 NZD to $2,792 NZD

A
Cheapest Retailer
-
$1,024 NZD
HK$4,500 HKD
B+
Retailer 2
-
$1,084 NZD
$610 USD
View
B+
Retailer 3
-
$1,116 NZD
$628 USD
View
Final sale: no returns
B+
Retailer 4
-
$1,209 NZD
$680 USD
View
B+
Retailer 5
-
$1,209 NZD
$680 USD
View
B+
Retailer 6
-
$1,257 NZD
$707 USD
View
B+
Retailer 7
-
$1,257 NZD
SGD 956 SGD
View
B
Retailer 8
-
$1,395 NZD
$785 USD
View
B
Retailer 9
-
$1,420 NZD
$799 USD
View
B
Retailer 10
-
$1,444 NZD
$813 USD
View
B
Retailer 11
-
$1,480 NZD
£656 GBP
View
B+
Retailer 12
-
$1,485 NZD
£658 GBP
View
B
Retailer 13
-
$1,537 NZD
$865 USD
View
B
Retailer 14
-
$1,721 NZD
€922 EUR
View
B
Retailer 15
-
$1,867 NZD
ZAR 16,968 ZAR
View
B
Retailer 16
-
$2,792 NZD
£1,237 GBP
View
Most Expensive
NZ Jewellers
8cb642c9-93eb-4818-901d-5b6b7c670ec0 · Oct 30
$3,793 NZD
$2,134 USD
View
Price under review
16 more retailers have this diamond
Prices start from $1,024 NZDSave up to $1,768 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
$1,024 NZD