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Oval|Natural|GIA

0.51ct G SI1 Oval Natural Diamond

GD • G/SI1 • GIA 1557236320

Certificate GIA 1557236320

Diamond specifications and retailer prices

From $900 AUD
$631 USD
As of November 2, 2026
Save $1,354 AUD (60%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $3,062 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 G colour (near-colourless) and SI1 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 1557236320. Listed at 16 retailers as of November 1, 2026, with a 150% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

0.51
Carat
G
Colour
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1557236320
Dimensions6.54 × 4.42 × 2.77 mm
L/W Ratio1.48
Key to symbols
Cloud, Crystal
Top View
6.54 mm4.42 mm0.51 ctG / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 1557236320
Side View
Table 60.0%CrownGirdle: Sli. Thick - ThickPavilionCulet: NoneDepth 62.8%

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: Nov 2
Current: $3,062 AUD|Low: $826 AUD|High: $3,062 AUD|Avg: $1,318 AUD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
November 2, 2026
Retailer 4$900 AUD
Retailer 13$950 AUD
Retailer 17$976 AUD
Retailer 18$976 AUD
Retailer 8$977 AUD
Retailer 16$1,015 AUD
Retailer 3$1,127 AUD
Retailer 10$1,132 AUD
Retailer 7$1,156 AUD
Retailer 9$1,165 AUD
Retailer 2$1,199 AUD
Retailer 11$1,205 AUD
Retailer 6$1,234 AUD
Retailer 14$1,390 AUD
Retailer 5$1,468 AUD
Retailer 15$1,507 AUD
Retailer 12$2,254 AUD
NZ Jewellers$3,062 AUD

29 data points across 18 retailers

16 retailers$900 AUD to $2,254 AUD

B+
Cheapest Retailer
-
$900 AUD
$631 USD
Final sale: no returns
B+
Retailer 2
-
$950 AUD
HK$5,200 HKD
View
B+
Retailer 3
-
$976 AUD
$684 USD
View
B+
Retailer 4
-
$976 AUD
$684 USD
View
B+
Retailer 5
-
$1,015 AUD
$711 USD
View
B+
Retailer 6
-
$1,127 AUD
$790 USD
View
B
Retailer 7
-
$1,156 AUD
$810 USD
View
B
Retailer 8
-
$1,165 AUD
$816 USD
View
B
Retailer 9
-
$1,199 AUD
£661 GBP
View
B
Retailer 10
-
$1,205 AUD
£665 GBP
View
B
Retailer 11
-
$1,234 AUD
$865 USD
View
B
Retailer 12
-
$1,390 AUD
€928 EUR
View
Retailer 13
-
$1,468 AUD
View
Price last confirmed 28 days ago
B
Retailer 14
-
$1,507 AUD
ZAR 17,064 ZAR
View
B
Retailer 15
-
$2,254 AUD
£1,244 GBP
View
Most Expensive
NZ Jewellers
33e7d847-8cda-4ced-9bd2-7b92ebc57310 · Oct 30
$3,062 AUD
$2,146 USD
View
Price under review
15 more retailers have this diamond
Prices start from $900 AUDSave up to $1,354 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
$900 AUD