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Round|Natural|GIA

0.51ct H SI2 Round Natural Diamond

EX • H/SI2 • GIA 2567223287

Certificate GIA 2567223287

Diamond specifications and retailer prices

From $541 AUD
As of November 6, 2026
Save $1,786 AUD (77%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $2,327 AUD at NZ Jewellers · As of November 4, 2026
View at NZ Jewellers

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 2567223287. Listed at 16 retailers as of November 4, 2026, with prices from $541 to $2,327, a $1,786 spread on the same certified stone. NZ Jewellers lists it at $2,327. 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
FluorescenceMedium
Crown angle34.5°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 2567223287
Dimensions5.11 × 5.13 × 3.13 mm
L/W Ratio1.00
Star length50%
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Feather, Crystal
Top View
5.11 mm5.13 mm0.51 ctH / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 2567223287
Side View
Table 59.0%Crown 34.5°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 61.1%

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: $2,327 AUD|Low: $541 AUD|High: $2,406 AUD|Avg: $994 AUD|-3.3%
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
Retailer 15
November 6, 2026
Retailer 2$541 AUD
Retailer 15$621 AUD
Retailer 5$684 AUD
Retailer 6$741 AUD
Retailer 9$771 AUD
Retailer 7$786 AUD
Retailer 14$799 AUD
Retailer 4$856 AUD
Retailer 10$856 AUD
Retailer 13$916 AUD
Retailer 11$934 AUD
Retailer 8$954 AUD
Retailer 12$996 AUD
Retailer 3$1,710 AUD
NZ Jewellers$2,327 AUD

32 data points across 15 retailers

16 retailers$541 AUD to $2,327 AUD

A
Cheapest Retailer
-
$541 AUD
A
Retailer 2
-
$621 AUD
View
A
Retailer 3
-
$684 AUD
View
Final sale: no returns
A
Retailer 4
-
$741 AUD
View
A
Retailer 5
-
$771 AUD
View
A
Retailer 6
-
$786 AUD
View
A
Retailer 7
-
$799 AUD
View
A
Retailer 8
-
$856 AUD
View
A
Retailer 9
-
$856 AUD
View
A
Retailer 10
-
$916 AUD
View
A
Retailer 11
-
$934 AUD
View
A
Retailer 12
-
$954 AUD
View
B+
Retailer 13
-
$967 AUD
View
B+
Retailer 14
-
$996 AUD
View
B
Retailer 15
-
$1,710 AUD
View
Most Expensive
B
NZ Jewellers
cb82a508-45f8-47d3-b045-88e028bda487 · Nov 4
$2,327 AUD
$1,629 USD
View
15 more retailers have this diamond
Prices start from $541 AUDSave up to $1,786 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
$541 AUD