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Oval|Natural|GIA

1.51ct J SI2 Oval Natural Diamond

EX • J/SI2 • GIA 2516806773

Certificate GIA 2516806773

Diamond specifications and retailer prices

From $5,505 AUD
$3,867 USD
As of November 1, 2026
Save $6,769 AUD (55%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $12,274 AUD at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

About this 1.51ct natural oval diamond

This 1.51ct natural oval sits in the one-and-a-half to two carat band, graded J colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2516806773. Listed at 17 retailers as of October 30, 2026, with prices from $5,505 to $12,274, a $6,769 spread on the same certified stone. NZ Jewellers lists it at $12,274. 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

1.51
Carat
J
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
Crown angle41.73°
Pavilion angle40.02°
OriginNatural
Grading LabGIA
CertificateGIA 2516806773
Dimensions8.66 × 6.24 × 4.02 mm
L/W Ratio1.39
Top View
8.66 mm6.24 mm1.51 ctJ / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 2516806773
Side View
Table 58.0%Crown 41.73°Girdle: STK-VTKPavilion 40.02°Culet: NoneDepth 64.4%

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: $12,274 AUD|Low: $5,099 AUD|High: $12,274 AUD|Avg: $7,483 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
November 2, 2026
Retailer 10$5,616 AUD
Retailer 12$5,702 AUD
Retailer 11$5,891 AUD
Retailer 3$6,382 AUD
Retailer 5$6,382 AUD
Retailer 13$6,382 AUD
Retailer 9$6,462 AUD
Retailer 2$7,006 AUD
Retailer 4$7,364 AUD
Retailer 8$7,779 AUD
Retailer 7$7,975 AUD
Retailer 6$11,222 AUD
NZ Jewellers$12,274 AUD

42 data points across 13 retailers

17 retailers$5,505 AUD to $12,274 AUD

A
Cheapest Retailer
-
$5,505 AUD
$3,867 USD
B+
Retailer 2
-
$5,616 AUD
$3,945 USD
View
Retailer 3
-
$5,702 AUD
$4,005 USD
View
Price last confirmed 25 days ago
B+
Retailer 4
-
$5,891 AUD
$4,138 USD
View
Final sale: no returns
B+
Retailer 5
-
$6,382 AUD
$4,483 USD
View
B+
Retailer 6
-
$6,382 AUD
$4,483 USD
View
B+
Retailer 7
-
$6,382 AUD
$4,483 USD
View
B+
Retailer 8
-
$6,462 AUD
$4,539 USD
View
B+
Retailer 9
-
$7,001 AUD
$4,918 USD
View
B+
Retailer 10
-
$7,006 AUD
£3,875 GBP
View
B+
Retailer 11
-
$7,033 AUD
$4,940 USD
View
B+
Retailer 12
-
$7,033 AUD
$4,940 USD
View
B
Retailer 13
-
$7,275 AUD
$5,110 USD
View
B
Retailer 14
-
$7,364 AUD
$5,173 USD
View
B
Retailer 15
-
$7,975 AUD
€5,335 EUR
View
B
Retailer 16
-
$11,222 AUD
£6,207 GBP
View
Most Expensive
B
NZ Jewellers
81e1ca6d-241d-4404-9e81-4fb04f3e8600 · Oct 30
$12,274 AUD
$8,622 USD
View
16 more retailers have this diamond
Prices start from $5,505 AUDSave up to $6,769 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
1.51ct Oval
$5,505 AUD