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Marquise|Natural|GIA

0.51ct J SI1 Marquise Natural Diamond

GD • J/SI1 • GIA 1323584591

Certificate GIA 1323584591

Diamond specifications and retailer prices

From $743 AUD
$521 USD
As of November 2, 2026
Save $1,784 AUD (71%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $2,527 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 standard cut grade stated by the retailer rather than the lab and certified by GIA 1323584591. Listed at 9 retailers as of October 30, 2026, with prices from $743 to $2,527, a $1,784 spread on the same certified stone. NZ Jewellers lists it at $2,527. 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
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryVery Good
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 1323584591
Dimensions7.29 × 4.28 × 2.69 mm
L/W Ratio1.70
Culet sizeNone
Key to symbols
Crystal
Top View
7.29 mm4.28 mm0.51 ctJ / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryVery Good
FluorescenceMedium
CertificateGIA 1323584591
Side View
Table 59.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 62.8%

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: $2,527 AUD|Low: $683 AUD|High: $2,580 AUD|Avg: $1,274 AUD|-2.0%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 2, 2026
Retailer 8$743 AUD
Retailer 3$828 AUD
Retailer 10$912 AUD
Retailer 2$988 AUD
Retailer 5$1,084 AUD
Retailer 9$1,217 AUD
Retailer 6$1,244 AUD
Retailer 7$1,341 AUD
Retailer 4$1,861 AUD
NZ Jewellers$2,527 AUD

44 data points across 10 retailers

9 retailers$743 AUD to $2,527 AUD

A
Cheapest Retailer
-
$743 AUD
$521 USD
Final sale: no returns
B+
Retailer 2
-
$828 AUD
$580 USD
View
B
Retailer 3
-
$988 AUD
£545 GBP
View
B
Retailer 4
-
$1,084 AUD
$760 USD
View
Retailer 5
-
$1,217 AUD
View
Price last confirmed 29 days ago
B
Retailer 6
-
$1,244 AUD
ZAR 14,084 ZAR
View
B
Retailer 7
-
$1,341 AUD
$940 USD
View
C
Retailer 8
-
$1,861 AUD
£1,027 GBP
View
Most Expensive
C
NZ Jewellers
1ecc8406-127a-40bc-af56-d78a0c727c9b · Oct 30
$2,527 AUD
$1,771 USD
View
8 more retailers have this diamond
Prices start from $743 AUDSave up to $1,784 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
$743 AUD