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Oval|Natural|GIA

1.51ct I SI2 Oval Natural Diamond

EX • I/SI2 • GIA 1555356497

Certificate GIA 1555356497

Diamond specifications and retailer prices

From $3,171 AUD
HK$17,400 HKD
As of November 1, 2026
Save $5,365 AUD (63%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $8,536 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 I colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1555356497. Listed at 12 retailers as of October 30, 2026, with prices from $3,171 to $8,536, a $5,365 spread on the same certified stone. NZ Jewellers lists it at $8,536. 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
I
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 1555356497
Dimensions9.57 × 6.34 × 3.99 mm
L/W Ratio1.51
Culet sizeNone
Key to symbols
Crystal, Feather, Needle
Top View
9.57 mm6.34 mm1.51 ctI / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 1555356497
Side View
Table 59.0%CrownGirdle: MED-THKPavilionCulet: NoneDepth 62.9%

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: $8,536 AUD|Low: $3,134 AUD|High: $8,661 AUD|Avg: $4,645 AUD|-1.4%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 1, 2026
Retailer 7$3,171 AUD
Retailer 2$3,241 AUD
Retailer 11$3,770 AUD
Retailer 5$3,983 AUD
Retailer 4$4,012 AUD
Retailer 10$4,083 AUD
Retailer 9$4,241 AUD
Retailer 12$4,398 AUD
Retailer 3$4,408 AUD
Retailer 8$4,711 AUD
Retailer 6$6,829 AUD
NZ Jewellers$8,536 AUD

34 data points across 12 retailers

12 retailers$3,171 AUD to $8,536 AUD

A
Cheapest Retailer
-
$3,171 AUD
HK$17,400 HKD
A
Retailer 2
-
$3,241 AUD
₹216,797 INR
View
A
Retailer 3
-
$3,770 AUD
$2,648 USD
View
Final sale: no returns
A
Retailer 4
-
$3,983 AUD
£2,203 GBP
View
A
Retailer 5
-
$4,012 AUD
$2,818 USD
View
A
Retailer 6
-
$4,083 AUD
$2,868 USD
View
A
Retailer 7
-
$4,241 AUD
$2,979 USD
View
A
Retailer 8
-
$4,398 AUD
$3,089 USD
View
A
Retailer 9
-
$4,408 AUD
SGD 4,184 SGD
View
A
Retailer 10
-
$4,711 AUD
$3,309 USD
View
A
Retailer 11
-
$6,829 AUD
£3,777 GBP
View
Most Expensive
B+
NZ Jewellers
df3f3558-a934-4f9b-8a24-f837e4552cf4 · Oct 30
$8,536 AUD
$5,996 USD
View
11 more retailers have this diamond
Prices start from $3,171 AUDSave up to $5,365 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
$3,171 AUD