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Oval|Natural|GIA

1.51ct F SI1 Oval Natural Diamond

VG • F/SI1 • GIA 2556750792

Certificate GIA 2556750792

Diamond specifications and retailer prices

From $7,898 AUD
As of November 5, 2026
Save $9,769 AUD (55%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: $17,667 AUD 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 F colour (colourless) and SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 2556750792. Listed at 23 retailers as of November 5, 2026, with prices from $7,898 to $17,667, a $9,769 spread on the same certified stone. NZ Jewellers lists it at $17,667. 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
F
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle45.4°
Pavilion angle36.8°
OriginNatural
Grading LabGIA
CertificateGIA 2556750792
Dimensions8.33 × 6.38 × 4.18 mm
L/W Ratio1.31
Girdle conditionFaceted
Culet sizeNone
Top View
8.33 mm6.38 mm1.51 ctF / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 2556750792
Side View
Table 65.0%Crown 45.4°Girdle: STK-VTKPavilion 36.8°Culet: NoneDepth 65.6%

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 5
Current: $17,667 AUD|Low: $7,898 AUD|High: $23,182 AUD|Avg: $11,918 AUD
NZ Jewellers
Retailer 2
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Retailer 26
November 6, 2026
Retailer 26$7,898 AUD
Retailer 10$8,345 AUD
Retailer 16$8,419 AUD
Retailer 17$8,435 AUD
Retailer 4$8,751 AUD
Retailer 12$8,834 AUD
Retailer 23$8,885 AUD
Retailer 2$9,371 AUD
Retailer 7$9,571 AUD
Retailer 14$9,718 AUD
Retailer 13$9,830 AUD
Retailer 6$9,936 AUD
Retailer 8$10,156 AUD
Retailer 20$10,245 AUD
Retailer 19$10,376 AUD
Retailer 5$10,639 AUD
Retailer 9$10,639 AUD
Retailer 22$10,803 AUD
Retailer 21$10,988 AUD
Retailer 25$11,042 AUD
Retailer 15$11,450 AUD
Retailer 3$12,096 AUD
Retailer 24$12,889 AUD
Retailer 11$14,681 AUD
NZ Jewellers$17,667 AUD
Retailer 18$19,780 AUD

23 data points across 26 retailers

23 retailers$7,898 AUD to $17,667 AUD

A
Cheapest Retailer
-
$7,898 AUD
A
Retailer 2
-
$8,345 AUD
View
Retailer 3
-
$8,419 AUD
View
Price last confirmed 31 days ago
A
Retailer 4
-
$8,751 AUD
View
B+
Retailer 5
-
$8,834 AUD
View
Final sale: no returns
A
Retailer 6
-
$8,885 AUD
View
B+
Retailer 7
-
$9,371 AUD
View
B+
Retailer 8
-
$9,571 AUD
View
B+
Retailer 9
-
$9,718 AUD
View
B+
Retailer 10
-
$9,830 AUD
View
B+
Retailer 11
-
$9,936 AUD
View
B+
Retailer 12
-
$10,156 AUD
View
B+
Retailer 13
-
$10,245 AUD
View
B+
Retailer 14
-
$10,376 AUD
View
B+
Retailer 15
-
$10,639 AUD
View
B+
Retailer 16
-
$10,639 AUD
View
B+
Retailer 17
-
$10,803 AUD
View
B+
Retailer 18
-
$10,988 AUD
View
B+
Retailer 19
-
$11,042 AUD
View
B
Retailer 20
-
$12,096 AUD
View
B
Retailer 21
-
$12,889 AUD
View
B
Retailer 22
-
$14,681 AUD
View
Most Expensive
B
NZ Jewellers
20bb4578-7047-4508-a00a-dd547a0f2ff0 · Nov 5
$17,667 AUD
$12,139 USD
View
22 more retailers have this diamond
Prices start from $7,898 AUDSave up to $9,769 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
$7,898 AUD