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Radiant|Natural|GIA

0.50ct I SI1 Radiant Natural Diamond

EX • I/SI1 • GIA 1438055204

Certificate GIA 1438055204

Diamond specifications and retailer prices

From $861 AUD
$605 USD
As of November 2, 2026
Save $1,026 AUD (54%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $3,230 AUD at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

About this 0.5ct natural radiant diamond

This 0.5ct natural radiant sits in the half to three-quarter carat band, graded I 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 1438055204. Listed at 11 retailers as of November 1, 2026, with a 119% 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

0.50
Carat
I
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 1438055204
Dimensions4.88 × 4.00 × 2.71 mm
L/W Ratio1.22
Culet sizeNone
Top View
4.88 mm4.00 mm0.50 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceMedium
CertificateGIA 1438055204
Side View
Table 62.0%CrownGirdle: Extremely ThickPavilionCulet: NoneDepth 67.7%

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 2
Current: $1,348 AUD|Low: $661 AUD|High: $1,909 AUD|Avg: $1,149 AUD|+2.4%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 2, 2026
Retailer 5$861 AUD
Retailer 4$883 AUD
Retailer 6$934 AUD
Retailer 7$1,076 AUD
Retailer 2$1,248 AUD
Retailer 1$1,348 AUD
Retailer 3$1,888 AUD

44 data points across 7 retailers

11 retailers$861 AUD to $1,888 AUD

A
Cheapest Retailer
-
$861 AUD
$605 USD
Final sale: no returns
B+
Retailer 2
-
$934 AUD
$656 USD
View
B+
Retailer 3
-
$969 AUD
$681 USD
View
B+
Retailer 4
-
$1,076 AUD
$756 USD
View
B
Retailer 5
-
$1,196 AUD
$840 USD
View
B
Retailer 6
-
$1,196 AUD
$840 USD
View
B
Retailer 7
-
$1,224 AUD
$860 USD
View
B
Retailer 8
-
$1,248 AUD
£690 GBP
View
B+
Retailer 9
-
$1,348 AUD
€902 EUR
View
B
Retailer 10
-
$1,888 AUD
£1,044 GBP
View
Most Expensive
NZ Jewellers
f4e5554e-bcd5-42c3-9487-48149f22e6e9 · Oct 30
$3,230 AUD
$2,269 USD
View
Price under review
10 more retailers have this diamond
Prices start from $861 AUDSave up to $1,026 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
0.50ct Radiant
$861 AUD