Oval|Natural|GIA

1.51ct F SI2 Oval Natural Diamond

ID • F/SI2 • GIA 2557576321

Certificate GIA 2557576321

Diamond specifications and retailer prices

From $4,469 USD
As of November 2, 2026
Save $5,197 USD (54%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: $9,666 USD at NZ Jewellers · As of October 30, 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 2557576321. Listed at 23 retailers as of October 30, 2026, with prices from $4,469 to $9,666, a $5,197 spread on the same certified stone. NZ Jewellers lists it at $9,666. 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
PolishVery Good
SymmetryVery Good
FluorescenceMedium
Crown angle37.9°
OriginNatural
Grading LabGIA
CertificateGIA 2557576321
Dimensions9.46 × 6.05 × 3.92 mm
L/W Ratio1.56
Girdle conditionVery Thick
Key to symbols
Twinning Wisp, Feather, Crystal, Cavity
Top View
9.46 mm6.05 mm1.51 ctF / SI2
OriginNatural
CutIdeal
PolishVery Good
SymmetryVery Good
FluorescenceMedium
CertificateGIA 2557576321
Side View
Table 63.0%Crown 37.9°Girdle: MED-VTKPavilionCulet: NoneDepth 64.8%

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: $9,666 USD|Low: $4,469 USD|High: $9,666 USD|Avg: $6,018 USD|+10.4%
NZ Jewellers
Retailer 2
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Retailer 23
November 2, 2026
Retailer 4$4,469 USD
Retailer 5$4,515 USD
Retailer 12$4,566 USD
Retailer 21$4,566 USD
Retailer 20$4,623 USD
Retailer 6$4,832 USD
Retailer 15$4,910 USD
Retailer 16$5,003 USD
Retailer 8$5,180 USD
Retailer 19$5,236 USD
Retailer 22$5,372 USD
Retailer 2$5,446 USD
Retailer 10$5,547 USD
Retailer 17$5,638 USD
Retailer 7$5,720 USD
Retailer 9$5,720 USD
Retailer 23$5,778 USD
Retailer 11$5,910 USD
Retailer 3$6,041 USD
Retailer 13$6,173 USD
Retailer 14$8,371 USD
Retailer 18$8,515 USD
NZ Jewellers$9,666 USD

20 data points across 23 retailers

23 retailers$4,469 USD to $9,666 USD

A
Cheapest Retailer
-
$4,469 USD
A
Retailer 2
-
$4,515 USD
View
A
Retailer 3
-
$4,566 USD
View
A
Retailer 4
-
$4,566 USD
View
A
Retailer 5
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$4,623 USD
View
A
Retailer 6
-
$4,760 USD
A$7,323 AUD
View
A
Retailer 7
-
$4,832 USD
View
Final sale: no returns
Retailer 8
-
$4,910 USD
View
Price last confirmed 20 days ago
A
Retailer 9
-
$5,180 USD
View
A
Retailer 10
-
$5,236 USD
View
A
Retailer 11
-
$5,372 USD
View
B+
Retailer 12
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$5,446 USD
£4,288 GBP
View
A
Retailer 13
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$5,547 USD
View
A
Retailer 14
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$5,638 USD
£4,439 GBP
View
A
Retailer 15
-
$5,720 USD
View
A
Retailer 16
-
$5,720 USD
View
A
Retailer 17
-
$5,778 USD
View
B+
Retailer 18
-
$5,910 USD
View
B+
Retailer 19
-
$6,041 USD
View
B+
Retailer 20
-
$6,173 USD
€5,879 EUR
View
B
Retailer 21
-
$8,371 USD
View
B
Retailer 22
-
$8,515 USD
£6,705 GBP
View
Most Expensive
B
NZ Jewellers
d2ab3c1f-a838-4bcb-bc8e-6cbec82ee8cc · Oct 30
$9,666 USD
View
22 more retailers have this diamond
Prices start from $4,469 USDSave up to $5,197 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
$4,469 USD