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Radiant|Natural|GIA

0.51ct H SI2 Radiant Natural Diamond

ID • H/SI2 • GIA 33205

Certificate GIA 33205

Diamond specifications and retailer prices

From $1,326 AUD
$932 USD
As of October 31, 2026
Save $83 AUD (6%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: $1,409 AUD at B2C Jewels · As of November 2, 2026
View at B2C Jewels

About this 0.51ct natural radiant diamond

This 0.51ct natural radiant 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 stated by the retailer rather than the lab and certified by GIA 33205. Listed at 2 retailers as of October 31, 2026, with a relatively tight 6% spread, which is unusual at this carat range and suggests competitive pricing across the listings. 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
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 33205
Dimensions5.49 × 3.95 mm
L/W Ratio1.39
Top View
5.49 mm3.95 mm0.51 ctH / SI2
OriginNatural
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 33205
Side View
Table 70.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 67.4%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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Price History

Last verified: Oct 31
Current: $1,409 AUD|Low: $1,326 AUD|High: $1,495 AUD|Avg: $1,407 AUD|-5.7%
B2C Jewels
Retailer 2
September 23, 2026
Retailer 2$1,326 AUD
B2C Jewels$1,409 AUD

6 data points across 2 retailers

2 retailers$1,326 AUD to $1,409 AUD

B+
Cheapest Retailer
-
$1,326 AUD
$932 USD
Most Expensive
B
B2C Jewels
22196345 · Nov 2
$1,409 AUD
$990 USD
View
1 more retailer has this diamond
Prices start from $1,326 AUDSave up to $83 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.

B+
0.51ct Radiant
$1,326 AUD