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Oval|Natural|GIA

1.50ct I SI1 Oval Natural Diamond

EX • I/SI1 • GIA 2557796851

Certificate GIA 2557796851

Diamond specifications and retailer prices

From $5,029 AUD
HK$27,600 HKD
As of November 1, 2026
Save $7,133 AUD (59%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $12,162 AUD at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

About this 1.5ct natural oval diamond

This 1.5ct natural oval sits in the one-and-a-half to two carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2557796851. Listed at 10 retailers as of October 30, 2026, with prices from $5,029 to $12,162, a $7,133 spread on the same certified stone. NZ Jewellers lists it at $12,162. 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

1.50
Carat
I
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Pavilion angle35.73°
OriginNatural
Grading LabGIA
CertificateGIA 2557796851
Dimensions8.80 × 6.25 × 4.03 mm
L/W Ratio1.41
Key to symbols
Crystal, Feather, Needle
Top View
8.80 mm6.25 mm1.50 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2557796851
Side View
Table 56.0%CrownGirdle: STK-THKPavilion 35.73°Culet: NoneDepth 64.4%

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: $12,162 AUD|Low: $5,029 AUD|High: $12,745 AUD|Avg: $7,879 AUD|-4.6%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 1, 2026
Retailer 2$5,029 AUD
Retailer 3$5,797 AUD
Retailer 5$6,151 AUD
Retailer 9$6,516 AUD
Retailer 4$6,853 AUD
Retailer 8$6,981 AUD
Retailer 10$7,429 AUD
Retailer 6$7,928 AUD
Retailer 7$11,179 AUD
NZ Jewellers$12,162 AUD

41 data points across 10 retailers

10 retailers$5,029 AUD to $12,162 AUD

A
Cheapest Retailer
-
$5,029 AUD
HK$27,600 HKD
A
Retailer 2
-
$5,797 AUD
€3,878 EUR
View
A
Retailer 3
-
$6,151 AUD
$4,321 USD
View
A
Retailer 4
-
$6,516 AUD
SGD 6,185 SGD
View
A
Retailer 5
-
$6,853 AUD
$4,814 USD
View
A
Retailer 6
-
$6,981 AUD
$4,904 USD
View
B+
Retailer 7
-
$7,429 AUD
View
B+
Retailer 8
-
$7,928 AUD
€5,304 EUR
View
B+
Retailer 9
-
$11,179 AUD
£6,183 GBP
View
Most Expensive
B
NZ Jewellers
565532c0-953b-4f2d-aed4-fc30a2b45f0d · Oct 30
$12,162 AUD
$8,543 USD
View
9 more retailers have this diamond
Prices start from $5,029 AUDSave up to $7,133 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
1.50ct Oval
$5,029 AUD