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Oval|Natural|GIA

1.51ct K SI1 Oval Natural Diamond

GD • K/SI1 • GIA 3485065648

Certificate GIA 3485065648

Diamond specifications and retailer prices

From $4,938 AUD
As of November 6, 2026
Save $6,418 AUD (57%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: $11,356 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 SI1 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 3485065648. Listed at 22 retailers as of November 5, 2026, with prices from $4,938 to $11,356, a $6,418 spread on the same certified stone. NZ Jewellers lists it at $11,356. 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
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 3485065648
Dimensions8.72 × 6.30 × 4.03 mm
L/W Ratio1.38
Top View
8.72 mm6.30 mm1.51 ctK / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 3485065648
Side View
Table 63.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 64.0%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: $11,356 AUD|Low: $5,014 AUD|High: $11,356 AUD|Avg: $7,196 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
November 6, 2026
Retailer 8$5,014 AUD
Retailer 4$5,906 AUD
Retailer 10$5,906 AUD
Retailer 12$5,906 AUD
Retailer 11$6,251 AUD
Retailer 2$6,324 AUD
Retailer 5$6,603 AUD
Retailer 3$6,814 AUD
Retailer 9$7,376 AUD
Retailer 6$7,952 AUD
Retailer 7$10,354 AUD
NZ Jewellers$11,356 AUD

39 data points across 12 retailers

22 retailers$4,938 AUD to $11,356 AUD

B+
Cheapest Retailer
-
$4,938 AUD
B+
Retailer 2
-
$5,014 AUD
View
B+
Retailer 3
-
$5,197 AUD
View
B+
Retailer 4
-
$5,547 AUD
View
B+
Retailer 5
-
$5,887 AUD
View
Retailer 6
-
$5,906 AUD
View
Price last confirmed 36 days ago
Retailer 7
-
$5,906 AUD
View
Price last confirmed 38 days ago
B+
Retailer 8
-
$5,906 AUD
View
B+
Retailer 9
-
$5,906 AUD
View
Retailer 10
-
$5,906 AUD
View
Price last confirmed 8 days ago
Retailer 11
-
$6,251 AUD
View
Price last confirmed 37 days ago
B+
Retailer 12
-
$6,251 AUD
View
B+
Retailer 13
-
$6,276 AUD
View
B+
Retailer 14
-
$6,324 AUD
View
B+
Retailer 15
-
$6,603 AUD
View
Retailer 16
-
$6,814 AUD
View
Price last confirmed 38 days ago
B
Retailer 17
-
$6,814 AUD
View
B
Retailer 18
-
$7,376 AUD
View
B
Retailer 19
-
$7,952 AUD
View
B
Retailer 20
-
$10,354 AUD
View
Retailer 21
-
$11,356 AUD
View
Price last confirmed 37 days ago
Most Expensive
C
NZ Jewellers
077c617c-fb5f-41d6-9ecd-75ebe8cdcee3 · Nov 5
$11,356 AUD
$7,803 USD
View
21 more retailers have this diamond
Prices start from $4,938 AUDSave up to $6,418 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.

B+
1.51ct Oval
$4,938 AUD