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Oval|Natural|GIA

1.51ct K SI2 Oval Natural Diamond

EX • K/SI2 • GIA 5393552506

Certificate GIA 5393552506

Diamond specifications and retailer prices

From $4,857 AUD
As of November 6, 2026
Save $6,736 AUD (58%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $11,592 AUD at NZ Jewellers · As of November 5, 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 K colour (faint-tinted) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 5393552506. Listed at 13 retailers as of November 5, 2026, with prices from $4,857 to $11,592, a $6,736 spread on the same certified stone. NZ Jewellers lists it at $11,592. 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
K
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 5393552506
Dimensions8.96 × 6.30 × 3.83 mm
L/W Ratio1.42
Top View
8.96 mm6.30 mm1.51 ctK / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceMedium
CertificateGIA 5393552506
Side View
Table 58.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 60.7%

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 6
Current: $11,592 AUD|Low: $4,857 AUD|High: $11,592 AUD|Avg: $7,202 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 6, 2026
Retailer 8$4,857 AUD
Retailer 3$5,303 AUD
Retailer 5$6,028 AUD
Retailer 11$6,028 AUD
Retailer 13$6,028 AUD
Retailer 4$6,126 AUD
Retailer 6$6,551 AUD
Retailer 2$6,622 AUD
Retailer 12$6,955 AUD
Retailer 9$7,526 AUD
Retailer 10$9,626 AUD
Retailer 7$10,568 AUD
NZ Jewellers$11,592 AUD

43 data points across 13 retailers

13 retailers$4,857 AUD to $11,592 AUD

A
Cheapest Retailer
-
$4,857 AUD
B+
Retailer 2
-
$5,303 AUD
View
Retailer 3
-
$6,028 AUD
View
Price last confirmed 8 days ago
B+
Retailer 4
-
$6,028 AUD
View
B+
Retailer 5
-
$6,028 AUD
View
B+
Retailer 6
-
$6,126 AUD
View
B+
Retailer 7
-
$6,551 AUD
View
B+
Retailer 8
-
$6,622 AUD
View
B+
Retailer 9
-
$6,955 AUD
View
B
Retailer 10
-
$7,526 AUD
View
B
Retailer 11
-
$9,626 AUD
View
B
Retailer 12
-
$10,568 AUD
View
Most Expensive
B
NZ Jewellers
190de76b-41cc-49dd-905a-593ead80c1cb · Nov 5
$11,592 AUD
$7,965 USD
View
12 more retailers have this diamond
Prices start from $4,857 AUDSave up to $6,736 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
$4,857 AUD