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Marquise|Natural|GIA

0.51ct J SI1 Marquise Natural Diamond

VG • J/SI1 • GIA 2567615927

Certificate GIA 2567615927

Diamond specifications and retailer prices

From $625 AUD
₹41,747 INR
As of October 30, 2026
Save $1,314 AUD (68%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $2,618 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 2567615927. Listed at 11 retailers as of October 29, 2026, with a 210% 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
PolishVery Good
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 2567615927
Dimensions7.95 × 4.20 × 2.69 mm
L/W Ratio1.89
Girdle conditionVery Thick
Top View
7.95 mm4.20 mm0.51 ctJ / SI1
OriginNatural
CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceFaint
CertificateGIA 2567615927
Side View
Table 55.0%CrownGirdle: Slightly ThickPavilionCulet: NoneDepth 64.0%

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: Oct 30
Current: $2,618 AUD|Low: $584 AUD|High: $2,618 AUD|Avg: $1,205 AUD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 31, 2026
Retailer 3$584 AUD
Retailer 7$625 AUD
Retailer 2$949 AUD
Retailer 11$1,020 AUD
Retailer 10$1,023 AUD
Retailer 4$1,025 AUD
Retailer 8$1,028 AUD
Retailer 5$1,238 AUD
Retailer 6$1,289 AUD
Retailer 9$1,939 AUD
NZ Jewellers$2,618 AUD

9 data points across 11 retailers

11 retailers$625 AUD to $1,939 AUD

A
Cheapest Retailer
-
$625 AUD
₹41,747 INR
B+
Retailer 2
-
$820 AUD
View
B+
Retailer 3
-
$949 AUD
$665 USD
View
B
Retailer 4
-
$1,020 AUD
$715 USD
View
B
Retailer 5
-
$1,023 AUD
$717 USD
View
B
Retailer 6
-
$1,025 AUD
£566 GBP
View
B
Retailer 7
-
$1,028 AUD
£567 GBP
View
B
Retailer 8
-
$1,238 AUD
€826 EUR
View
B
Retailer 9
-
$1,289 AUD
ZAR 14,594 ZAR
View
C
Retailer 10
-
$1,939 AUD
£1,070 GBP
View
Most Expensive
NZ Jewellers
12549640-0603-44e0-8a69-9ebd64547ed1 · Oct 30
$2,618 AUD
$1,835 USD
View
Price under review
10 more retailers have this diamond
Prices start from $625 AUDSave up to $1,314 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
$625 AUD