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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 $4,972 NZD
As of November 4, 2026
Save $6,308 NZD (56%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $11,280 NZD 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 $4,972 to $11,280, a $6,308 spread on the same certified stone. NZ Jewellers lists it at $11,280. 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: $11,280 NZD|Low: $4,355 NZD|High: $11,280 NZD|Avg: $6,989 NZD
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$4,972 NZD
Retailer 18$5,100 NZD
Retailer 15$5,103 NZD
Retailer 10$5,114 NZD
Retailer 6$5,186 NZD
Retailer 13$5,206 NZD
Retailer 5$5,682 NZD
Retailer 9$5,864 NZD
Retailer 3$5,893 NZD
Retailer 16$6,090 NZD
Retailer 8$6,424 NZD
Retailer 11$6,700 NZD
Retailer 4$6,768 NZD
Retailer 2$7,109 NZD
Retailer 12$7,901 NZD
Retailer 7$9,348 NZD
Retailer 14$10,796 NZD
NZ Jewellers$11,280 NZD

42 data points across 18 retailers

18 retailers$4,972 NZD to $11,280 NZD

A
Cheapest Retailer
-
$4,972 NZD
A
Retailer 2
-
$5,100 NZD
View
A
Retailer 3
-
$5,103 NZD
View
A
Retailer 4
-
$5,186 NZD
View
A
Retailer 5
-
$5,206 NZD
View
B+
Retailer 6
-
$5,682 NZD
View
B+
Retailer 7
-
$5,864 NZD
View
B+
Retailer 8
-
$5,893 NZD
View
Retailer 9
-
$6,011 NZD
View
Price last confirmed 8 days ago
B+
Retailer 10
-
$6,090 NZD
View
B+
Retailer 11
-
$6,424 NZD
View
B+
Retailer 12
-
$6,700 NZD
View
B+
Retailer 13
-
$6,768 NZD
View
B+
Retailer 14
-
$7,109 NZD
View
B+
Retailer 15
-
$7,901 NZD
View
B
Retailer 16
-
$9,348 NZD
View
B
Retailer 17
-
$10,796 NZD
View
Most Expensive
B
NZ Jewellers
b0a8d4f0-f7b8-4c21-81cf-4c788d294640 · Nov 5
$11,280 NZD
$6,253 USD
View
17 more retailers have this diamond
Prices start from $4,972 NZDSave up to $6,308 NZD

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
$4,972 NZD