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Oval|Natural|GIA

0.51ct H SI1 Oval Natural Diamond

EX • H/SI1 • GIA 2568589589

Certificate GIA 2568589589

Diamond specifications and retailer prices

From $589 AUD
As of November 6, 2026
Save $2,048 AUD (78%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $2,637 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 H colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2568589589. Listed at 11 retailers as of November 5, 2026, with prices from $589 to $2,637, a $2,048 spread on the same certified stone. NZ Jewellers lists it at $2,637. 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
H
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryExcellent
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 2568589589
Dimensions6.31 × 4.33 × 2.78 mm
L/W Ratio1.46
Girdle conditionThick
Top View
6.31 mm4.33 mm0.51 ctH / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryExcellent
FluorescenceFaint
CertificateGIA 2568589589
Side View
Table 61.0%CrownGirdle: MediumPavilionCulet: NoneDepth 64.2%

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: $2,637 AUD|Low: $589 AUD|High: $2,637 AUD|Avg: $1,127 AUD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 6, 2026
Retailer 10$589 AUD
Retailer 2$624 AUD
Retailer 6$953 AUD
Retailer 4$1,022 AUD
Retailer 3$1,026 AUD
Retailer 8$1,032 AUD
Retailer 9$1,035 AUD
Retailer 7$1,246 AUD
Retailer 5$1,297 AUD
NZ Jewellers$2,637 AUD

10 data points across 10 retailers

11 retailers$589 AUD to $2,637 AUD

A
Cheapest Retailer
-
$589 AUD
Final sale: no returns
A
Retailer 2
-
$624 AUD
View
A
Retailer 3
-
$828 AUD
View
B+
Retailer 4
-
$953 AUD
View
B+
Retailer 5
-
$1,022 AUD
View
B+
Retailer 6
-
$1,026 AUD
View
B+
Retailer 7
-
$1,032 AUD
View
B+
Retailer 8
-
$1,035 AUD
View
B+
Retailer 9
-
$1,246 AUD
View
B
Retailer 10
-
$1,297 AUD
View
Most Expensive
B
NZ Jewellers
48c9bb09-83af-4f02-ae8f-d0c082692294 · Nov 5
$2,637 AUD
$1,812 USD
View
10 more retailers have this diamond
Prices start from $589 AUDSave up to $2,048 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
$589 AUD