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Oval|Natural|GIA

1.51ct K SI1 Oval Natural Diamond

GD • K/SI1 • GIA 1513557476

Certificate GIA 1513557476

Diamond specifications and retailer prices

From $6,306 AUD
As of November 5, 2026
Save $7,195 AUD (53%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $13,502 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 1513557476. Listed at 16 retailers as of November 5, 2026, with prices from $6,306 to $13,502, a $7,195 spread on the same certified stone. NZ Jewellers lists it at $13,502. 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
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1513557476
Dimensions9.31 × 6.62 × 3.81 mm
L/W Ratio1.41
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Feather, Crystal, Needle, Indented Natural
Top View
9.31 mm6.62 mm1.51 ctK / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1513557476
Side View
Table 59.0%CrownGirdle: ThickPavilionCulet: NoneDepth 57.5%

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 5
Current: $13,502 AUD|Low: $6,244 AUD|High: $13,502 AUD|Avg: $8,653 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 10$6,244 AUD
Retailer 12$6,379 AUD
Retailer 11$6,807 AUD
Retailer 3$7,313 AUD
Retailer 5$7,313 AUD
Retailer 13$7,313 AUD
Retailer 7$7,798 AUD
Retailer 2$7,837 AUD
Retailer 4$8,438 AUD
Retailer 6$8,596 AUD
Retailer 8$9,849 AUD
Retailer 9$12,824 AUD
NZ Jewellers$13,502 AUD

45 data points across 13 retailers

16 retailers$6,306 AUD to $13,502 AUD

Retailer 1
-
$6,244 AUD
Price last confirmed 16 days ago
B+
Retailer 2
-
$6,306 AUD
View
B+
Retailer 3
-
$6,379 AUD
View
B+
Retailer 4
-
$6,807 AUD
View
B
Retailer 5
-
$6,877 AUD
View
Retailer 6
-
$7,313 AUD
View
Price last confirmed 8 days ago
B
Retailer 7
-
$7,313 AUD
View
B
Retailer 8
-
$7,313 AUD
View
B
Retailer 9
-
$7,705 AUD
View
B
Retailer 10
-
$7,798 AUD
View
B
Retailer 11
-
$7,837 AUD
View
B
Retailer 12
-
$8,438 AUD
View
B
Retailer 13
-
$8,596 AUD
View
B
Retailer 14
-
$9,849 AUD
View
C
Retailer 15
-
$12,824 AUD
View
Most Expensive
C
NZ Jewellers
8bc41d33-7895-43aa-8bd4-97a357c6a8eb · Nov 5
$13,502 AUD
$9,277 USD
View
15 more retailers have this diamond
Prices start from $6,306 AUDSave up to $7,195 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
$6,306 AUD