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Oval|Natural|GIA

1.51ct F SI2 Oval Natural Diamond

ID • F/SI2 • GIA 6233707718

Certificate GIA 6233707718

Diamond specifications and retailer prices

From $10,255 NZD
As of November 2, 2026
Save $7,948 NZD (44%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: $18,203 NZD at NZ Jewellers · As of November 2, 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 F colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6233707718. Listed at 6 retailers as of November 2, 2026, with prices from $10,255 to $18,203, a $7,948 spread on the same certified stone. NZ Jewellers lists it at $18,203. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.51
Carat
F
Colour
SI2
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle37.03°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 6233707718
Dimensions8.82 × 6.36 × 4.08 mm
L/W Ratio1.39
Top View
8.82 mm6.36 mm1.51 ctF / SI2
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 6233707718
Side View
Table 61.0%Crown 37.03°Girdle: MediumPavilion 40.8°Culet: NoneDepth 64.2%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 2
Current: $18,203 NZD|Low: $10,255 NZD|High: $18,391 NZD|Avg: $12,709 NZD|-1.0%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 6, 2026
Retailer 3$10,255 NZD
Retailer 5$10,885 NZD
Retailer 6$10,885 NZD
Retailer 7$11,069 NZD
Retailer 10$11,202 NZD
Retailer 8$11,769 NZD
Retailer 9$12,232 NZD
Retailer 2$12,303 NZD
Retailer 4$16,033 NZD
NZ Jewellers$18,203 NZD

28 data points across 10 retailers

6 retailers$10,255 NZD to $18,203 NZD

A
Cheapest Retailer
-
$10,255 NZD
A
Retailer 2
-
$10,885 NZD
View
A
Retailer 3
-
$10,885 NZD
View
A
Retailer 4
-
$11,069 NZD
View
B+
Retailer 5
-
$16,033 NZD
View
Most Expensive
B
NZ Jewellers
a2274e47-11d6-446e-bc6b-0c603322b6b4 · Nov 2
$18,203 NZD
$10,091 USD
View
5 more retailers have this diamond
Prices start from $10,255 NZDSave up to $7,948 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
$10,255 NZD