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Oval|Natural|GIA

0.51ct J SI1 Oval Natural Diamond

EX • J/SI1 • GIA 2536210465

Certificate GIA 2536210465

Diamond specifications and retailer prices

From $671 AUD
As of November 4, 2026
Save $1,009 AUD (60%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $2,790 AUD at NZ Jewellers · As of September 11, 2026
View at NZ Jewellers

About this 0.51ct natural oval diamond

This 0.51ct natural oval 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 2536210465. Listed at 14 retailers as of November 2, 2026, with a 150% 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
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 2536210465
Dimensions6.54 × 4.33 × 2.72 mm
L/W Ratio1.51
Top View
6.54 mm4.33 mm0.51 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceMedium
CertificateGIA 2536210465
Side View
Table 61.0%CrownGirdle: 0PavilionCulet: NoneDepth 62.8%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 4
Current: $1,128 AUD|Low: $483 AUD|High: $1,700 AUD|Avg: $1,016 AUD|+2.8%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 4, 2026
Retailer 6$671 AUD
Retailer 8$806 AUD
Retailer 5$830 AUD
Retailer 2$837 AUD
Retailer 3$1,090 AUD
Retailer 7$1,094 AUD
Retailer 1$1,128 AUD
Retailer 4$1,680 AUD

44 data points across 8 retailers

14 retailers$671 AUD to $1,680 AUD

A
Cheapest Retailer
-
$671 AUD
Final sale: no returns
Retailer 2
-
$728 AUD
View
Price last confirmed 56 days ago
Retailer 3
-
$728 AUD
View
Price last confirmed 45 days ago
B+
Retailer 4
-
$830 AUD
View
B+
Retailer 5
-
$837 AUD
View
Retailer 6
-
$840 AUD
View
Price last confirmed 61 days ago
Retailer 7
-
$840 AUD
View
Price last confirmed 45 days ago
B
Retailer 8
-
$991 AUD
View
B
Retailer 9
-
$1,090 AUD
View
Retailer 10
-
$1,094 AUD
View
Price last confirmed 34 days ago
B
Retailer 11
-
$1,128 AUD
View
B
Retailer 12
-
$1,680 AUD
View
Retailer 13
-
$2,790 AUD
View
Price under review
Most Expensive
NZ Jewellers
3e5eef4e-ecca-498c-94a9-788262e8d370 · Sep 11
$2,790 AUD
$1,917 USD
View
Price under review
13 more retailers have this diamond
Prices start from $671 AUDSave up to $1,009 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 Oval
$671 AUD