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Oval|Natural|GIA

0.51ct F SI1 Oval Natural Diamond

GD • F/SI1 • GIA 1519515584

Certificate GIA 1519515584

Diamond specifications and retailer prices

From $1,023 AUD
As of November 6, 2026
Save $1,273 AUD (55%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $3,932 AUD at NZ Jewellers · As of October 20, 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 F colour (colourless) and SI1 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 1519515584. Listed at 21 retailers as of November 2, 2026, with a 124% 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
F
Colour
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1519515584
Dimensions6.68 × 4.55 × 2.67 mm
L/W Ratio1.47
Culet sizeNone
Key to symbols
Twinning Wisp, Cloud, Crystal
Top View
6.68 mm4.55 mm0.51 ctF / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1519515584
Side View
Table 63.0%CrownGirdle: MED-THKPavilionCulet: NoneDepth 58.7%

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 6
Current: $3,932 AUD|Low: $1,006 AUD|High: $3,932 AUD|Avg: $1,550 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
November 6, 2026
Retailer 4$1,023 AUD
Retailer 13$1,025 AUD
Retailer 5$1,156 AUD
Retailer 12$1,255 AUD
Retailer 11$1,303 AUD
Retailer 8$1,441 AUD
Retailer 14$1,447 AUD
Retailer 3$1,492 AUD
Retailer 2$1,530 AUD
Retailer 7$1,621 AUD
Retailer 6$1,885 AUD
Retailer 9$1,934 AUD
Retailer 10$2,297 AUD
NZ Jewellers$3,932 AUD

39 data points across 14 retailers

21 retailers$1,023 AUD to $2,297 AUD

B+
Cheapest Retailer
-
$1,023 AUD
B+
Retailer 2
-
$1,025 AUD
View
B+
Retailer 3
-
$1,156 AUD
View
Final sale: no returns
Retailer 4
-
$1,246 AUD
View
Price last confirmed 75 days ago
B
Retailer 5
-
$1,255 AUD
View
B
Retailer 6
-
$1,269 AUD
View
B
Retailer 7
-
$1,303 AUD
View
B
Retailer 8
-
$1,441 AUD
View
B
Retailer 9
-
$1,447 AUD
View
Retailer 10
-
$1,447 AUD
View
Price last confirmed 15 days ago
B
Retailer 11
-
$1,447 AUD
View
B
Retailer 12
-
$1,492 AUD
View
B
Retailer 13
-
$1,530 AUD
View
B
Retailer 14
-
$1,621 AUD
View
B
Retailer 15
-
$1,848 AUD
View
Retailer 16
-
$1,885 AUD
View
Price last confirmed 34 days ago
B
Retailer 17
-
$1,934 AUD
View
B
Retailer 18
-
$2,154 AUD
View
B
Retailer 19
-
$2,297 AUD
View
Retailer 20
-
$3,932 AUD
View
Price under review
Most Expensive
NZ Jewellers
f1577039-890a-4496-8172-06303e487764 · Oct 20
$3,932 AUD
$2,702 USD
View
Price under review
20 more retailers have this diamond
Prices start from $1,023 AUDSave up to $1,273 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
$1,023 AUD