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Round|Natural|GIA

0.51ct H SI2 Round Natural Diamond

EX • H/SI2 • GIA 6562618778

Certificate GIA 6562618778

Diamond specifications and retailer prices

From $521 AUD
As of November 6, 2026
Save $1,502 AUD (74%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $2,023 AUD at Diamond Exchange Canada · As of November 5, 2026
View at Diamond Exchange Canada

About this 0.51ct natural round diamond

This 0.51ct natural round sits in the half to three-quarter carat band, graded H colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6562618778. Listed at 10 retailers as of November 5, 2026, with prices from $521 to $2,023, a $1,502 spread on the same certified stone. Diamond Exchange Canada lists it at $2,023. 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
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6562618778
Dimensions5.18 × 5.20 × 3.12 mm
L/W Ratio1.00
Top View
5.18 mm5.20 mm0.51 ctH / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6562618778
Side View
Table 59.0%CrownGirdle: MED-STKPavilionCulet: NoneDepth 60.1%

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: $2,023 AUD|Low: $521 AUD|High: $2,121 AUD|Avg: $949 AUD|-4.6%
Diamond Exchange Canada
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 6, 2026
Retailer 2$521 AUD
Retailer 8$603 AUD
Retailer 10$603 AUD
Retailer 6$641 AUD
Retailer 7$650 AUD
Retailer 3$746 AUD
Retailer 5$964 AUD
Retailer 9$980 AUD
Retailer 4$1,137 AUD
Diamond Exchange Canada$2,023 AUD

24 data points across 10 retailers

10 retailers$521 AUD to $2,023 AUD

A
Cheapest Retailer
-
$521 AUD
A
Retailer 2
-
$603 AUD
View
A
Retailer 3
-
$603 AUD
View
A
Retailer 4
-
$641 AUD
View
A
Retailer 5
-
$650 AUD
View
A
Retailer 6
-
$746 AUD
View
A
Retailer 7
-
$964 AUD
View
B+
Retailer 8
-
$980 AUD
View
B+
Retailer 9
-
$1,137 AUD
View
Most Expensive
B
Diamond Exchange Canada
1992904917 · Nov 5
$2,023 AUD
CA$1,967 CAD
View
9 more retailers have this diamond
Prices start from $521 AUDSave up to $1,502 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 Round
$521 AUD