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Oval|Natural|GIA

0.51ct I SI2 Oval Natural Diamond

EX • I/SI2 • GIA 5533910368

Certificate GIA 5533910368

Diamond specifications and retailer prices

From $994 AUD
$698 USD
As of October 29, 2026
Save $1,019 AUD (51%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $3,441 AUD at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

About this 0.51ct natural oval diamond

This 0.51ct natural oval sits in the half to three-quarter 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 5533910368. Listed at 15 retailers as of October 26, 2026, with a 103% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

0.51
Carat
I
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.42°
Pavilion angle39.04°
OriginNatural
Grading LabGIA
CertificateGIA 5533910368
Dimensions6.48 × 4.44 × 2.69 mm
L/W Ratio1.46
Top View
6.48 mm4.44 mm0.51 ctI / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 5533910368
Side View
Table 57.0%Crown 36.42°Girdle: STK-THKPavilion 39.04°Culet: NoneDepth 60.6%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 29
Current: $3,441 AUD|Low: $994 AUD|High: $3,441 AUD|Avg: $1,532 AUD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 2, 2026
Retailer 6$994 AUD
Retailer 8$994 AUD
Retailer 5$1,032 AUD
Retailer 7$1,147 AUD
Retailer 10$1,261 AUD
Retailer 3$1,307 AUD
Retailer 2$1,423 AUD
Retailer 9$1,651 AUD
Retailer 4$2,012 AUD
NZ Jewellers$3,441 AUD

42 data points across 10 retailers

15 retailers$994 AUD to $2,012 AUD

B+
Cheapest Retailer
-
$994 AUD
$698 USD
B+
Retailer 2
-
$994 AUD
$698 USD
View
B+
Retailer 3
-
$1,015 AUD
$713 USD
View
B+
Retailer 4
-
$1,032 AUD
$725 USD
View
B
Retailer 5
-
$1,147 AUD
$806 USD
View
B+
Retailer 6
-
$1,223 AUD
$859 USD
View
B
Retailer 7
-
$1,253 AUD
$880 USD
View
B
Retailer 8
-
$1,253 AUD
$880 USD
View
B
Retailer 9
-
$1,261 AUD
$886 USD
View
B
Retailer 10
-
$1,295 AUD
$910 USD
View
B
Retailer 11
-
$1,307 AUD
£723 GBP
View
B
Retailer 12
-
$1,423 AUD
€952 EUR
View
B
Retailer 13
-
$2,012 AUD
£1,113 GBP
View
Retailer 14
-
$3,168 AUD
CA$3,091 CAD
View
Price under review
Most Expensive
NZ Jewellers
a946eeb6-7b30-43fe-9a47-f908a73a7f6c · Oct 30
$3,441 AUD
$2,417 USD
View
Price under review
14 more retailers have this diamond
Prices start from $994 AUDSave up to $1,019 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.

B+
0.51ct Oval
$994 AUD