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Oval|Natural|GIA

1.51ct F SI2 Oval Natural Diamond

ID • F/SI2 • GIA 2557576321

Certificate GIA 2557576321

Diamond specifications and retailer prices

From $6,377 AUD
$4,469 USD
As of November 2, 2026
Save $7,416 AUD (54%) vs most expensive(unlock to see where)
25 retailers carry this diamond
Most expensive: $13,792 AUD 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 25 retailers as of October 30, 2026, with prices from $6,377 to $13,792, a $7,416 spread on the same certified stone. NZ Jewellers lists it at $13,792. 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
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
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 2
Current: $13,792 AUD|Low: $6,377 AUD|High: $13,792 AUD|Avg: $8,583 AUD|+10.4%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
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Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
Retailer 19
Retailer 20
Retailer 21
Retailer 22
Retailer 23
Retailer 24
November 2, 2026
Retailer 6$6,377 AUD
Retailer 7$6,442 AUD
Retailer 15$6,515 AUD
Retailer 24$6,515 AUD
Retailer 23$6,597 AUD
Retailer 8$6,895 AUD
Retailer 17$7,006 AUD
Retailer 10$7,391 AUD
Retailer 2$7,471 AUD
Retailer 22$7,471 AUD
Retailer 13$7,601 AUD
Retailer 3$7,665 AUD
Retailer 18$7,770 AUD
Retailer 12$7,915 AUD
Retailer 20$8,045 AUD
Retailer 9$8,162 AUD
Retailer 11$8,162 AUD
Retailer 4$8,245 AUD
Retailer 14$8,433 AUD
Retailer 5$8,620 AUD
Retailer 19$8,808 AUD
Retailer 16$11,945 AUD
Retailer 21$12,151 AUD
NZ Jewellers$13,792 AUD

20 data points across 24 retailers

25 retailers$6,377 AUD to $13,792 AUD

A
Cheapest Retailer
-
$6,377 AUD
$4,469 USD
A
Retailer 2
-
$6,442 AUD
$4,515 USD
View
A
Retailer 3
-
$6,515 AUD
$4,566 USD
View
A
Retailer 4
-
$6,515 AUD
$4,566 USD
View
A
Retailer 5
-
$6,597 AUD
$4,623 USD
View
A
Retailer 6
-
$6,792 AUD
View
A
Retailer 7
-
$6,895 AUD
$4,832 USD
View
Final sale: no returns
Retailer 8
-
$7,006 AUD
$4,910 USD
View
Price last confirmed 21 days ago
A
Retailer 9
-
$7,391 AUD
$5,180 USD
View
A
Retailer 10
-
$7,471 AUD
$5,236 USD
View
A
Retailer 11
-
$7,471 AUD
$5,236 USD
View
A
Retailer 12
-
$7,601 AUD
$5,327 USD
View
A
Retailer 13
-
$7,665 AUD
$5,372 USD
View
B+
Retailer 14
-
$7,770 AUD
£4,288 GBP
View
A
Retailer 15
-
$7,915 AUD
$5,547 USD
View
A
Retailer 16
-
$8,045 AUD
£4,439 GBP
View
A
Retailer 17
-
$8,162 AUD
$5,720 USD
View
A
Retailer 18
-
$8,162 AUD
$5,720 USD
View
A
Retailer 19
-
$8,245 AUD
$5,778 USD
View
B+
Retailer 20
-
$8,433 AUD
$5,910 USD
View
B+
Retailer 21
-
$8,620 AUD
$6,041 USD
View
B+
Retailer 22
-
$8,808 AUD
€5,879 EUR
View
B
Retailer 23
-
$11,945 AUD
$8,371 USD
View
B
Retailer 24
-
$12,151 AUD
£6,705 GBP
View
Most Expensive
B
NZ Jewellers
d2ab3c1f-a838-4bcb-bc8e-6cbec82ee8cc · Oct 30
$13,792 AUD
$9,666 USD
View
24 more retailers have this diamond
Prices start from $6,377 AUDSave up to $7,416 AUD

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
$6,377 AUD