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Oval|Natural|GIA

1.51ct K SI1 Oval Natural Diamond

GD • K/SI1 • GIA 6375880480

Certificate GIA 6375880480

Diamond specifications and retailer prices

From $8,060 NZD
As of November 6, 2026
Save $7,870 NZD (49%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $15,930 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 standard cut grade stated by the retailer rather than the lab and certified by GIA 6375880480. Listed at 17 retailers as of November 5, 2026, with prices from $8,060 to $15,930, a $7,870 spread on the same certified stone. NZ Jewellers lists it at $15,930. 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
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6375880480
Dimensions8.88 × 6.63 × 4.05 mm
L/W Ratio1.34
Top View
8.88 mm6.63 mm1.51 ctK / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6375880480
Side View
Table 60.0%CrownGirdle: THN-STKPavilionCulet: NoneDepth 61.1%

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: $9,018 NZD|Low: $8,406 NZD|High: $14,981 NZD|Avg: $10,402 NZD|-1.7%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 6, 2026
Retailer 6$8,406 NZD
Retailer 2$8,453 NZD
Retailer 1$9,018 NZD
Retailer 7$9,525 NZD
Retailer 5$10,775 NZD
Retailer 3$11,621 NZD
Retailer 4$14,765 NZD

40 data points across 7 retailers

17 retailers$8,060 NZD to $15,930 NZD

B+
Cheapest Retailer
-
$8,060 NZD
B+
Retailer 2
-
$8,285 NZD
View
B+
Retailer 3
-
$8,305 NZD
View
Retailer 4
-
$8,406 NZD
View
Price last confirmed 16 days ago
B+
Retailer 5
-
$8,453 NZD
View
B
Retailer 6
-
$8,659 NZD
View
B
Retailer 7
-
$8,938 NZD
View
B
Retailer 8
-
$9,018 NZD
View
Retailer 9
-
$9,525 NZD
View
Price last confirmed 8 days ago
B
Retailer 10
-
$9,525 NZD
View
B
Retailer 11
-
$9,525 NZD
View
B
Retailer 12
-
$9,799 NZD
View
B
Retailer 13
-
$10,775 NZD
View
B
Retailer 14
-
$10,989 NZD
View
B
Retailer 15
-
$11,621 NZD
View
C
Retailer 16
-
$14,765 NZD
View
Most Expensive
C
NZ Jewellers
2ac61b3e-3814-4d03-9bf2-8ef5f5c05a53 · Nov 5
$15,930 NZD
$8,831 USD
View
16 more retailers have this diamond
Prices start from $8,060 NZDSave up to $7,870 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.

B+
1.51ct Oval
$8,060 NZD