Oval|Natural|GIA

1.51ct F SI2 Oval Natural Diamond

ID • F/SI2 • GIA 5231766500

Certificate GIA 5231766500

Diamond specifications and retailer prices

From $5,438 USD
As of November 2, 2026
Save $4,216 USD (44%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: $9,654 USD 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 5231766500. Listed at 6 retailers as of November 2, 2026, with prices from $5,438 to $9,654, a $4,216 spread on the same certified stone. NZ Jewellers lists it at $9,654. 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
Color
SI2
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle39.2°
Pavilion angle40.61°
OriginNatural
Grading LabGIA
CertificateGIA 5231766500
Dimensions8.75 × 6.31 × 4.14 mm
L/W Ratio1.39
Top View
8.75 mm6.31 mm1.51 ctF / SI2
OriginNatural
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 5231766500
Side View
Table 58.0%Crown 39.2°Girdle: MediumPavilion 40.61°Culet: NoneDepth 65.7%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 2
Current: $9,654 USD|Low: $5,438 USD|High: $9,752 USD|Avg: $6,731 USD|-1.0%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 2, 2026
Retailer 2$5,438 USD
Retailer 4$5,772 USD
Retailer 5$5,772 USD
Retailer 6$5,882 USD
Retailer 8$5,979 USD
Retailer 7$6,167 USD
Retailer 9$6,559 USD
Retailer 3$8,503 USD
NZ Jewellers$9,654 USD

31 data points across 9 retailers

6 retailers$5,438 USD to $9,654 USD

A
Cheapest Retailer
-
$5,438 USD
A
Retailer 2
-
$5,772 USD
View
A
Retailer 3
-
$5,772 USD
View
A
Retailer 4
-
$5,882 USD
View
B+
Retailer 5
-
$8,503 USD
View
Most Expensive
B
NZ Jewellers
7e187fd1-d5e8-4b79-829f-44795d5646fe · Nov 2
$9,654 USD
View
5 more retailers have this diamond
Prices start from $5,438 USDSave up to $4,216 USD

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
$5,438 USD