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Marquise|Natural|GIA

0.51ct J SI1 Marquise Natural Diamond

VG • J/SI1 • GIA 2243023239

Certificate GIA 2243023239

Diamond specifications and retailer prices

From $729 AUD
$511 USD
As of November 2, 2026
Save $1,190 AUD (62%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $3,269 AUD 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 very-good cut grade stated by the retailer rather than the lab and certified by GIA 2243023239. Listed at 15 retailers as of October 29, 2026, with a 163% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
J
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle38.36°
Pavilion angle37.42°
OriginNatural
Grading LabGIA
CertificateGIA 2243023239
Dimensions7.70 × 4.16 × 2.54 mm
L/W Ratio1.85
Culet sizeNone
Top View
7.70 mm4.16 mm0.51 ctJ / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 2243023239
Side View
Table 56.0%Crown 38.36°Girdle: STK-VTKPavilion 37.42°Culet: NoneDepth 61.1%

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 2
Current: $3,269 AUD|Low: $618 AUD|High: $3,269 AUD|Avg: $1,314 AUD
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
Retailer 18
November 2, 2026
Retailer 9$618 AUD
Retailer 8$848 AUD
Retailer 7$908 AUD
Retailer 4$927 AUD
Retailer 10$930 AUD
Retailer 15$945 AUD
Retailer 18$945 AUD
Retailer 5$967 AUD
Retailer 16$1,019 AUD
Retailer 6$1,090 AUD
Retailer 3$1,206 AUD
Retailer 2$1,240 AUD
Retailer 17$1,252 AUD
Retailer 11$1,480 AUD
Retailer 12$1,609 AUD
Retailer 13$1,919 AUD
Retailer 14$3,003 AUD
NZ Jewellers$3,269 AUD

26 data points across 18 retailers

15 retailers$729 AUD to $1,919 AUD

A
Cheapest Retailer
-
$729 AUD
$511 USD
B+
Retailer 2
-
$927 AUD
$650 USD
View
B+
Retailer 3
-
$945 AUD
$662 USD
View
B+
Retailer 4
-
$945 AUD
$662 USD
View
B+
Retailer 5
-
$967 AUD
$678 USD
View
B
Retailer 6
-
$1,019 AUD
$714 USD
View
B
Retailer 7
-
$1,090 AUD
$764 USD
View
B
Retailer 8
-
$1,206 AUD
$845 USD
View
B
Retailer 9
-
$1,240 AUD
£684 GBP
View
B
Retailer 10
-
$1,252 AUD
$877 USD
View
B
Retailer 11
-
$1,480 AUD
€988 EUR
View
B
Retailer 12
-
$1,609 AUD
ZAR 18,217 ZAR
View
B
Retailer 13
-
$1,919 AUD
£1,059 GBP
View
Retailer 14
-
$3,003 AUD
CA$2,923 CAD
View
Price under review
Most Expensive
NZ Jewellers
6e80d1d9-bed5-4791-9044-15335624a7c3 · Oct 30
$3,269 AUD
$2,291 USD
View
Price under review
14 more retailers have this diamond
Prices start from $729 AUDSave up to $1,190 AUD

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
$729 AUD