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Oval|Natural|GIA

1.51ct K SI1 Oval Natural Diamond

VG • K/SI1 • GIA 2386505851

Certificate GIA 2386505851

Diamond specifications and retailer prices

From $4,011 AUD
As of November 4, 2026
Save $5,090 AUD (56%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $9,101 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 very-good cut grade stated by the retailer rather than the lab and certified by GIA 2386505851. Listed at 18 retailers as of November 4, 2026, with prices from $4,011 to $9,101, a $5,090 spread on the same certified stone. NZ Jewellers lists it at $9,101. 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
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2386505851
Dimensions8.31 × 6.36 × 4.20 mm
L/W Ratio1.31
Top View
8.31 mm6.36 mm1.51 ctK / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 2386505851
Side View
Table 60.0%CrownGirdle: ThickPavilionCulet: NoneDepth 66.0%

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 4
Current: $9,101 AUD|Low: $3,513 AUD|High: $9,101 AUD|Avg: $5,639 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
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
November 6, 2026
Retailer 17$4,011 AUD
Retailer 18$4,114 AUD
Retailer 15$4,117 AUD
Retailer 10$4,126 AUD
Retailer 6$4,184 AUD
Retailer 13$4,200 AUD
Retailer 5$4,585 AUD
Retailer 9$4,732 AUD
Retailer 3$4,755 AUD
Retailer 16$4,913 AUD
Retailer 8$5,183 AUD
Retailer 11$5,405 AUD
Retailer 4$5,461 AUD
Retailer 2$5,736 AUD
Retailer 12$6,375 AUD
Retailer 7$7,542 AUD
Retailer 14$8,711 AUD
NZ Jewellers$9,101 AUD

42 data points across 18 retailers

18 retailers$4,011 AUD to $9,101 AUD

A
Cheapest Retailer
-
$4,011 AUD
A
Retailer 2
-
$4,114 AUD
View
A
Retailer 3
-
$4,117 AUD
View
A
Retailer 4
-
$4,184 AUD
View
A
Retailer 5
-
$4,200 AUD
View
B+
Retailer 6
-
$4,585 AUD
View
B+
Retailer 7
-
$4,732 AUD
View
B+
Retailer 8
-
$4,755 AUD
View
Retailer 9
-
$4,849 AUD
View
Price last confirmed 8 days ago
B+
Retailer 10
-
$4,913 AUD
View
B+
Retailer 11
-
$5,183 AUD
View
B+
Retailer 12
-
$5,405 AUD
View
B+
Retailer 13
-
$5,461 AUD
View
B+
Retailer 14
-
$5,736 AUD
View
B+
Retailer 15
-
$6,375 AUD
View
B
Retailer 16
-
$7,542 AUD
View
B
Retailer 17
-
$8,711 AUD
View
Most Expensive
B
NZ Jewellers
b0a8d4f0-f7b8-4c21-81cf-4c788d294640 · Nov 5
$9,101 AUD
$6,253 USD
View
17 more retailers have this diamond
Prices start from $4,011 AUDSave up to $5,090 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
$4,011 AUD