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Round|Natural|GIA

0.50ct I SI1 Round Natural Diamond

EX • I/SI1 • GIA 1555704351

Certificate GIA 1555704351

Diamond specifications and retailer prices

From $541 AUD
As of November 6, 2026
Save $1,767 AUD (77%) vs most expensive(unlock to see where)
24 retailers carry this diamond
Most expensive: $2,464 AUD at NZ Jewellers · As of September 5, 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 1555704351. Listed at 24 retailers as of November 6, 2026, with a 326% 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

Specifications

CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle34.5°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 1555704351
Dimensions5.09 × 5.12 × 3.14 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizeNone
Top View
5.09 mm5.12 mm0.50 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 1555704351
Side View
Table 57.0%Crown 34.5°Girdle: THN-STKPavilion 41°Culet: NoneDepth 61.6%

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: $2,308 AUD|Low: $541 AUD|High: $2,353 AUD|Avg: $1,002 AUD|-1.9%
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
Retailer 16
Retailer 17
Retailer 18
Retailer 19
Retailer 20
Retailer 21
November 6, 2026
Retailer 17$541 AUD
Retailer 11$633 AUD
Retailer 10$678 AUD
Retailer 2$680 AUD
Retailer 7$691 AUD
Retailer 12$751 AUD
Retailer 14$761 AUD
Retailer 20$776 AUD
Retailer 15$793 AUD
Retailer 6$803 AUD
Retailer 5$850 AUD
Retailer 21$917 AUD
Retailer 13$924 AUD
Retailer 18$947 AUD
Retailer 3$998 AUD
Retailer 9$1,019 AUD
Retailer 16$1,019 AUD
Retailer 19$1,042 AUD
Retailer 8$1,733 AUD
Retailer 4$2,102 AUD
NZ Jewellers$2,308 AUD

20 data points across 21 retailers

24 retailers$541 AUD to $2,308 AUD

A
Cheapest Retailer
-
$541 AUD
A
Retailer 2
-
$633 AUD
View
A
Retailer 3
-
$678 AUD
View
A
Retailer 4
-
$680 AUD
View
Final sale: no returns
A
Retailer 5
-
$691 AUD
View
A
Retailer 6
-
$751 AUD
View
Retailer 7
-
$761 AUD
View
Price last confirmed 20 days ago
A
Retailer 8
-
$776 AUD
View
Retailer 9
-
$786 AUD
View
Price last confirmed 63 days ago
A
Retailer 10
-
$793 AUD
View
A
Retailer 11
-
$803 AUD
View
A
Retailer 12
-
$850 AUD
View
Retailer 13
-
$898 AUD
View
Price last confirmed 59 days ago
A
Retailer 14
-
$917 AUD
View
A
Retailer 15
-
$924 AUD
View
A
Retailer 16
-
$947 AUD
View
B+
Retailer 17
-
$998 AUD
View
B+
Retailer 18
-
$1,019 AUD
View
B+
Retailer 19
-
$1,019 AUD
View
B+
Retailer 20
-
$1,042 AUD
View
B
Retailer 21
-
$1,733 AUD
View
B
Retailer 22
-
$2,102 AUD
View
B
Retailer 23
-
$2,308 AUD
View
Most Expensive
NZ Jewellers
0fbbc272-3477-4896-9d45-b4c12400f3fe · Sep 5
$2,464 AUD
$1,693 USD
View
Price last confirmed 62 days ago
23 more retailers have this diamond
Prices start from $541 AUDSave up to $1,767 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
$541 AUD