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Oval|Natural|GIA

1.51ct K SI2 Oval Natural Diamond

VG • K/SI2 • GIA 6545992502

Certificate GIA 6545992502

Diamond specifications and retailer prices

From $2,496 AUD
As of November 6, 2026
Save $4,529 AUD (64%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $7,539 AUD at NZ Jewellers · As of October 14, 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 very-good cut grade stated by the retailer rather than the lab and certified by GIA 6545992502. Listed at 19 retailers as of November 5, 2026, with a 181% 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

1.51
Carat
K
Colour
SI2
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6545992502
Dimensions9.15 × 6.15 × 3.84 mm
L/W Ratio1.49
Top View
9.15 mm6.15 mm1.51 ctK / SI2
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6545992502
Side View
Table 58.0%CrownGirdle: Very ThickPavilionCulet: NDepth 62.5%

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: $7,025 AUD|Low: $2,496 AUD|High: $7,539 AUD|Avg: $4,018 AUD|-6.8%
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
Retailer 14
Retailer 15
Retailer 16
November 6, 2026
Retailer 3$2,496 AUD
Retailer 14$3,036 AUD
Retailer 5$3,116 AUD
Retailer 8$3,304 AUD
Retailer 2$3,347 AUD
Retailer 12$3,361 AUD
Retailer 10$3,473 AUD
Retailer 6$3,483 AUD
Retailer 16$3,515 AUD
Retailer 9$3,563 AUD
Retailer 13$3,652 AUD
Retailer 7$3,781 AUD
Retailer 4$3,877 AUD
Retailer 11$4,171 AUD
Retailer 15$5,871 AUD
NZ Jewellers$7,025 AUD

25 data points across 16 retailers

19 retailers$2,496 AUD to $7,025 AUD

A
Cheapest Retailer
-
$2,496 AUD
A
Retailer 2
-
$3,036 AUD
View
A
Retailer 3
-
$3,116 AUD
View
B+
Retailer 4
-
$3,304 AUD
View
A
Retailer 5
-
$3,347 AUD
View
A
Retailer 6
-
$3,361 AUD
View
B+
Retailer 7
-
$3,473 AUD
View
Retailer 8
-
$3,483 AUD
View
Price last confirmed 8 days ago
A
Retailer 9
-
$3,515 AUD
View
A
Retailer 10
-
$3,563 AUD
View
Retailer 11
-
$3,606 AUD
View
Price last confirmed 23 days ago
A
Retailer 12
-
$3,652 AUD
View
B+
Retailer 13
-
$3,781 AUD
View
A
Retailer 14
-
$3,877 AUD
View
B+
Retailer 15
-
$4,171 AUD
View
Retailer 16
-
$4,870 AUD
View
Price last confirmed 66 days ago
B+
Retailer 17
-
$5,871 AUD
View
B
Retailer 18
-
$7,025 AUD
View
Most Expensive
NZ Jewellers
1868feef-2f90-41e8-bedb-bb8eeaf51541 · Oct 14
$7,539 AUD
$5,180 USD
View
Price last confirmed 23 days ago
18 more retailers have this diamond
Prices start from $2,496 AUDSave up to $4,529 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
$2,496 AUD