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Oval|Natural|GIA

0.51ct D SI2 Oval Natural Diamond

EX • D/SI2 • GIA 6515880819

Certificate GIA 6515880819

Diamond specifications and retailer prices

From $808 AUD
As of November 6, 2026
Save $2,631 AUD (77%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: $3,439 AUD at NZ Jewellers · As of November 5, 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 D colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6515880819. Listed at 22 retailers as of November 5, 2026, with prices from $808 to $3,439, a $2,631 spread on the same certified stone. NZ Jewellers lists it at $3,439. 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
D
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6515880819
Dimensions6.06 × 4.38 × 2.83 mm
L/W Ratio1.38
Top View
6.06 mm4.38 mm0.51 ctD / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6515880819
Side View
Table 56.0%CrownGirdle: VTK-ETKPavilionCulet: NoneDepth 64.8%

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 6
Current: $808 AUD|Low: $699 AUD|High: $3,216 AUD|Avg: $1,291 AUD|-2.1%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 6, 2026
Retailer 1$808 AUD
Retailer 8$1,012 AUD
Retailer 7$1,092 AUD
Retailer 5$1,097 AUD
Retailer 6$1,113 AUD
Retailer 3$1,304 AUD
Retailer 2$1,546 AUD
Retailer 4$2,008 AUD

41 data points across 8 retailers

22 retailers$808 AUD to $3,439 AUD

A
Cheapest Retailer
-
$808 AUD
Retailer 2
-
$838 AUD
View
Price last confirmed 63 days ago
A
Retailer 3
-
$1,012 AUD
View
Final sale: no returns
Retailer 4
-
$1,092 AUD
View
Price last confirmed 19 days ago
Retailer 5
-
$1,097 AUD
View
Price last confirmed 21 days ago
Retailer 6
-
$1,097 AUD
View
Price last confirmed 45 days ago
Retailer 7
-
$1,097 AUD
View
Price last confirmed 17 days ago
B+
Retailer 8
-
$1,097 AUD
View
A
Retailer 9
-
$1,113 AUD
View
Retailer 10
-
$1,266 AUD
View
Price last confirmed 67 days ago
B+
Retailer 11
-
$1,266 AUD
View
B+
Retailer 12
-
$1,266 AUD
View
Retailer 13
-
$1,266 AUD
View
Price last confirmed 45 days ago
B+
Retailer 14
-
$1,266 AUD
View
B+
Retailer 15
-
$1,289 AUD
View
B+
Retailer 16
-
$1,304 AUD
View
B+
Retailer 17
-
$1,546 AUD
View
B
Retailer 18
-
$2,008 AUD
View
Retailer 19
-
$3,439 AUD
View
Price last confirmed 68 days ago
B
Retailer 20
-
$3,439 AUD
View
Retailer 21
-
$3,439 AUD
View
Price last confirmed 48 days ago
Most Expensive
B
NZ Jewellers
ac2051ab-ac8c-4390-b85d-b8a5644c3624 · Nov 5
$3,439 AUD
$2,363 USD
View
21 more retailers have this diamond
Prices start from $808 AUDSave up to $2,631 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
0.51ct Oval
$808 AUD