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Round|Natural|GIA

0.50ct I SI1 Round Natural Diamond

EX • I/SI1 • GIA 6555724521

Certificate GIA 6555724521

Diamond specifications and retailer prices

From $677 AUD
As of November 6, 2026
Save $2,371 AUD (78%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $3,048 AUD at NZ Jewellers · As of November 4, 2026
View at NZ Jewellers

About this 0.5ct natural round diamond

This 0.5ct natural round 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 and certified by GIA 6555724521. Listed at 21 retailers as of November 4, 2026, with prices from $677 to $3,048, a $2,371 spread on the same certified stone. NZ Jewellers lists it at $3,048. 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

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33°
Pavilion angle41.8°
OriginNatural
Grading LabGIA
CertificateGIA 6555724521
Dimensions5.06 × 5.10 × 3.14 mm
L/W Ratio1.01
Culet sizeNone
Key to symbols
Crystal, Feather
Top View
5.06 mm5.10 mm0.50 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6555724521
Side View
Table 60.0%Crown 33°Girdle: MED-STKPavilion 41.8°Culet: NoneDepth 61.8%

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: $1,180 AUD|Low: $616 AUD|High: $2,270 AUD|Avg: $1,278 AUD|+5.1%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 6, 2026
Retailer 6$677 AUD
Retailer 8$917 AUD
Retailer 5$1,157 AUD
Retailer 1$1,180 AUD
Retailer 2$1,291 AUD
Retailer 7$1,460 AUD
Retailer 3$1,499 AUD
Retailer 4$2,243 AUD

43 data points across 8 retailers

21 retailers$677 AUD to $3,048 AUD

A
Cheapest Retailer
-
$677 AUD
Final sale: no returns
A
Retailer 2
-
$881 AUD
View
Retailer 3
-
$902 AUD
View
Price last confirmed 43 days ago
A
Retailer 4
-
$908 AUD
View
A
Retailer 5
-
$917 AUD
View
Retailer 6
-
$947 AUD
View
Price last confirmed 21 days ago
B+
Retailer 7
-
$947 AUD
View
B+
Retailer 8
-
$1,016 AUD
View
B+
Retailer 9
-
$1,042 AUD
View
B+
Retailer 10
-
$1,076 AUD
View
B
Retailer 11
-
$1,157 AUD
View
B+
Retailer 12
-
$1,161 AUD
View
B+
Retailer 13
-
$1,180 AUD
View
B+
Retailer 14
-
$1,230 AUD
View
B+
Retailer 15
-
$1,291 AUD
View
B+
Retailer 16
-
$1,352 AUD
View
Retailer 17
-
$1,460 AUD
View
Price last confirmed 33 days ago
B
Retailer 18
-
$1,499 AUD
View
B
Retailer 19
-
$2,243 AUD
View
B
Retailer 20
-
$2,789 AUD
View
Most Expensive
B
NZ Jewellers
90ad359f-4180-4cf8-a382-056f606b9d32 · Nov 4
$3,048 AUD
$2,094 USD
View
20 more retailers have this diamond
Prices start from $677 AUDSave up to $2,371 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 Round
$677 AUD