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Oval|Natural|GIA

1.51ct E SI1 Oval Natural Diamond

ID • E/SI1 • GIA 2538516298

Certificate GIA 2538516298

Diamond specifications and retailer prices

From $10,704 AUD
As of November 1, 2026
Save $13,310 AUD (55%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $24,014 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 E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2538516298. Listed at 15 retailers as of November 1, 2026, with prices from $10,704 to $24,014, a $13,310 spread on the same certified stone. NZ Jewellers lists it at $24,014. 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
E
Colour
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle41.36°
Pavilion angle39.16°
OriginNatural
Grading LabGIA
CertificateGIA 2538516298
Dimensions8.49 × 6.25 × 4.17 mm
L/W Ratio1.36
Top View
8.49 mm6.25 mm1.51 ctE / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 2538516298
Side View
Table 57.0%Crown 41.36°Girdle: ThickPavilion 39.16°Culet: NoneDepth 66.8%

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 1
Current: $15,600 AUD|Low: $10,704 AUD|High: $20,250 AUD|Avg: $14,315 AUD|+2.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 7$10,704 AUD
Retailer 9$11,242 AUD
Retailer 10$11,942 AUD
Retailer 11$12,217 AUD
Retailer 4$13,200 AUD
Retailer 2$13,208 AUD
Retailer 8$13,267 AUD
Retailer 3$15,008 AUD
Retailer 1$15,600 AUD
Retailer 5$17,517 AUD
Retailer 6$19,956 AUD

46 data points across 11 retailers

15 retailers$10,704 AUD to $24,014 AUD

A
Cheapest Retailer
-
$10,704 AUD
Retailer 2
-
$11,242 AUD
View
Price last confirmed 11 days ago
B+
Retailer 3
-
$11,706 AUD
View
B+
Retailer 4
-
$11,942 AUD
View
Retailer 5
-
$12,007 AUD
View
Price last confirmed 8 days ago
B+
Retailer 6
-
$12,217 AUD
View
B+
Retailer 7
-
$13,007 AUD
View
B+
Retailer 8
-
$13,200 AUD
View
B+
Retailer 9
-
$13,208 AUD
View
Retailer 10
-
$13,267 AUD
View
Price last confirmed 14 days ago
B+
Retailer 11
-
$15,008 AUD
View
B+
Retailer 12
-
$15,600 AUD
View
B
Retailer 13
-
$17,517 AUD
View
B
Retailer 14
-
$19,956 AUD
View
Most Expensive
B
NZ Jewellers
bfcda0e1-43b7-44b5-b715-b7633484abd4 · Nov 5
$24,014 AUD
$16,500 USD
View
14 more retailers have this diamond
Prices start from $10,704 AUDSave up to $13,310 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
$10,704 AUD