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Oval|Natural|GIA

1.51ct E SI1 Oval Natural Diamond

EX • E/SI1 • GIA 2516454924

Certificate GIA 2516454924

Diamond specifications and retailer prices

From $10,382 AUD
$7,293 USD
As of October 30, 2026
Save $11,718 AUD (53%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $22,100 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 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 2516454924. Listed at 16 retailers as of October 30, 2026, with prices from $10,382 to $22,100, a $11,718 spread on the same certified stone. NZ Jewellers lists it at $22,100. 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
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.98°
Pavilion angle39.08°
OriginNatural
Grading LabGIA
CertificateGIA 2516454924
Dimensions8.72 × 6.35 × 4.16 mm
L/W Ratio1.37
Key to symbols
Feather, Crystal, Cloud, Needle
Top View
8.72 mm6.35 mm1.51 ctE / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2516454924
Side View
Table 63.0%Crown 36.98°Girdle: THK-VTKPavilion 39.08°Culet: NDepth 65.5%

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: Oct 30
Current: $12,291 AUD|Low: $10,163 AUD|High: $18,637 AUD|Avg: $12,673 AUD|+0.5%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
October 29, 2026
Retailer 10$10,382 AUD
Retailer 11$11,047 AUD
Retailer 9$11,087 AUD
Retailer 2$11,282 AUD
Retailer 4$11,774 AUD
Retailer 12$11,971 AUD
Retailer 1$12,291 AUD
Retailer 7$12,454 AUD
Retailer 3$12,714 AUD
Retailer 6$14,417 AUD
Retailer 8$15,946 AUD
Retailer 5$18,514 AUD

42 data points across 12 retailers

16 retailers$10,382 AUD to $22,100 AUD

A
Cheapest Retailer
-
$10,382 AUD
$7,293 USD
B+
Retailer 2
-
$11,047 AUD
$7,760 USD
View
B+
Retailer 3
-
$11,087 AUD
$7,788 USD
View
Final sale: no returns
B+
Retailer 4
-
$11,088 AUD
$7,789 USD
View
B+
Retailer 5
-
$11,282 AUD
$7,925 USD
View
B+
Retailer 6
-
$11,774 AUD
$8,271 USD
View
B+
Retailer 7
-
$11,971 AUD
$8,409 USD
View
B+
Retailer 8
-
$12,155 AUD
$8,538 USD
View
B+
Retailer 9
-
$12,291 AUD
£6,798 GBP
View
B+
Retailer 10
-
$12,454 AUD
View
B+
Retailer 11
-
$12,714 AUD
$8,931 USD
View
B
Retailer 12
-
$13,813 AUD
$9,703 USD
View
B
Retailer 13
-
$14,417 AUD
€9,645 EUR
View
Retailer 14
-
$15,946 AUD
ZAR 180,960 ZAR
View
Price last confirmed 8 days ago
B
Retailer 15
-
$18,514 AUD
£10,240 GBP
View
Most Expensive
B
NZ Jewellers
bc228933-8170-4d5c-84b9-6692ffa876f1 · Oct 30
$22,100 AUD
$15,524 USD
View
15 more retailers have this diamond
Prices start from $10,382 AUDSave up to $11,718 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
$10,382 AUD