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Oval|Natural|GIA

1.51ct F SI2 Oval Natural Diamond

EX • F/SI2 • GIA 6455128223

Certificate GIA 6455128223

Diamond specifications and retailer prices

From $7,981 AUD
HK$43,800 HKD
As of November 1, 2026
Save $10,328 AUD (56%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $18,309 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 6455128223. Listed at 17 retailers as of October 30, 2026, with prices from $7,981 to $18,309, a $10,328 spread on the same certified stone. NZ Jewellers lists it at $18,309. 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
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 6455128223
Dimensions8.76 × 6.24 × 4.03 mm
L/W Ratio1.40
Top View
8.76 mm6.24 mm1.51 ctF / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 6455128223
Side View
Table 59.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 64.5%

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: Nov 1
Current: $7,982 AUD|Low: $7,655 AUD|High: $15,440 AUD|Avg: $10,640 AUD|-1.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 2, 2026
Retailer 6$7,981 AUD
Retailer 1$7,982 AUD
Retailer 5$9,131 AUD
Retailer 7$9,360 AUD
Retailer 8$10,103 AUD
Retailer 3$10,321 AUD
Retailer 9$11,115 AUD
Retailer 2$11,958 AUD
Retailer 4$15,256 AUD

36 data points across 9 retailers

17 retailers$7,981 AUD to $18,309 AUD

A
Cheapest Retailer
-
$7,981 AUD
HK$43,800 HKD
A
Retailer 2
-
$7,982 AUD
₹533,985 INR
View
Retailer 3
-
$9,110 AUD
SGD 8,648 SGD
View
Price last confirmed 18 days ago
A
Retailer 4
-
$9,131 AUD
$6,414 USD
View
B+
Retailer 5
-
$9,347 AUD
$6,566 USD
View
B+
Retailer 6
-
$9,360 AUD
$6,575 USD
View
B+
Retailer 7
-
$10,103 AUD
$7,097 USD
View
Final sale: no returns
B+
Retailer 8
-
$10,105 AUD
$7,098 USD
View
B+
Retailer 9
-
$10,321 AUD
£5,708 GBP
View
B+
Retailer 10
-
$10,946 AUD
$7,689 USD
View
B+
Retailer 11
-
$11,115 AUD
$7,808 USD
View
B+
Retailer 12
-
$11,180 AUD
$7,853 USD
View
B+
Retailer 13
-
$11,958 AUD
€8,000 EUR
View
B+
Retailer 14
-
$12,630 AUD
$8,872 USD
View
B
Retailer 15
-
$15,256 AUD
£8,438 GBP
View
B
Retailer 16
-
$16,932 AUD
$11,894 USD
View
Most Expensive
B
NZ Jewellers
e2e0bffa-2620-4c99-98d0-a40ac2736498 · Oct 30
$18,309 AUD
$12,861 USD
View
16 more retailers have this diamond
Prices start from $7,981 AUDSave up to $10,328 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
$7,981 AUD