CaratHunter
Plans
Oval|Natural|GIA

0.51ct D SI2 Oval Natural Diamond

EX • D/SI2 • GIA 2564205635

Certificate GIA 2564205635

Diamond specifications and retailer prices

From $744 AUD
As of November 6, 2026
Save $1,126 AUD (60%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $2,838 AUD at NZ Jewellers · As of September 15, 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 2564205635. Listed at 17 retailers as of November 2, 2026, with a 151% 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
D
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryGood
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2564205635
Dimensions6.03 × 4.49 × 2.81 mm
L/W Ratio1.34
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Cloud, Feather
Top View
6.03 mm4.49 mm0.51 ctD / SI2
OriginNatural
CutExcellent
PolishVery Good
SymmetryGood
FluorescenceNone
CertificateGIA 2564205635
Side View
Table 64.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 62.7%

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: $998 AUD|Low: $718 AUD|High: $2,061 AUD|Avg: $1,206 AUD|-7.9%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 6, 2026
Retailer 5$744 AUD
Retailer 1$998 AUD
Retailer 3$1,010 AUD
Retailer 2$1,195 AUD
Retailer 4$1,243 AUD
Retailer 6$1,870 AUD

45 data points across 6 retailers

17 retailers$744 AUD to $1,870 AUD

A
Cheapest Retailer
-
$744 AUD
Final sale: no returns
Retailer 2
-
$830 AUD
View
Price last confirmed 19 days ago
Retailer 3
-
$892 AUD
View
Price last confirmed 45 days ago
Retailer 4
-
$894 AUD
View
Price last confirmed 21 days ago
Retailer 5
-
$894 AUD
View
Price last confirmed 22 days ago
Retailer 6
-
$905 AUD
View
Price last confirmed 53 days ago
Retailer 7
-
$958 AUD
View
Price last confirmed 19 days ago
A
Retailer 8
-
$998 AUD
View
A
Retailer 9
-
$1,010 AUD
View
Retailer 10
-
$1,030 AUD
View
Price last confirmed 45 days ago
Retailer 11
-
$1,045 AUD
View
Price last confirmed 53 days ago
B+
Retailer 12
-
$1,195 AUD
View
B+
Retailer 13
-
$1,243 AUD
View
B
Retailer 14
-
$1,870 AUD
View
Retailer 15
-
$2,602 AUD
View
Price last confirmed 20 days ago
Retailer 16
-
$2,799 AUD
View
Price last confirmed 46 days ago
Most Expensive
NZ Jewellers
da349af0-584a-489a-bff0-25c08fe352aa · Sep 15
$2,838 AUD
$1,950 USD
View
Price last confirmed 52 days ago
16 more retailers have this diamond
Prices start from $744 AUDSave up to $1,126 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
$744 AUD