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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 $671 NZD
As of November 7, 2026
Save $2,190 NZD (77%) vs most expensive(unlock to see where)
26 retailers carry this diamond
Most expensive: $3,054 NZD 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 26 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 7
Current: $2,861 NZD|Low: $671 NZD|High: $2,917 NZD|Avg: $1,230 NZD|-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
Retailer 22
November 7, 2026
Retailer 2$671 NZD
Retailer 14$785 NZD
Retailer 12$841 NZD
Retailer 21$842 NZD
Retailer 10$857 NZD
Retailer 15$931 NZD
Retailer 6$961 NZD
Retailer 16$980 NZD
Retailer 3$983 NZD
Retailer 9$1,053 NZD
Retailer 13$1,073 NZD
Retailer 20$1,135 NZD
Retailer 22$1,145 NZD
Retailer 18$1,182 NZD
Retailer 17$1,201 NZD
Retailer 7$1,237 NZD
Retailer 4$1,263 NZD
Retailer 11$1,263 NZD
Retailer 5$1,292 NZD
Retailer 19$2,096 NZD
Retailer 8$2,605 NZD
NZ Jewellers$2,861 NZD

19 data points across 22 retailers

26 retailers$671 NZD to $2,861 NZD

A
Cheapest Retailer
-
$671 NZD
A
Retailer 2
-
$785 NZD
View
A
Retailer 3
-
$841 NZD
View
A
Retailer 4
-
$842 NZD
View
Final sale: no returns
A
Retailer 5
-
$857 NZD
View
A
Retailer 6
-
$931 NZD
View
Retailer 7
-
$943 NZD
View
Price last confirmed 20 days ago
A
Retailer 8
-
$961 NZD
View
Retailer 9
-
$974 NZD
View
Price last confirmed 63 days ago
A
Retailer 10
-
$980 NZD
View
A
Retailer 11
-
$983 NZD
View
A
Retailer 12
-
$1,053 NZD
View
A
Retailer 13
-
$1,073 NZD
View
Retailer 14
-
$1,113 NZD
View
Price last confirmed 59 days ago
A
Retailer 15
-
$1,135 NZD
View
A
Retailer 16
-
$1,145 NZD
View
A
Retailer 17
-
$1,182 NZD
View
B+
Retailer 18
-
$1,201 NZD
View
B+
Retailer 19
-
$1,237 NZD
View
B+
Retailer 20
-
$1,263 NZD
View
B+
Retailer 21
-
$1,263 NZD
View
B+
Retailer 22
-
$1,292 NZD
View
B
Retailer 23
-
$2,096 NZD
View
B
Retailer 24
-
$2,605 NZD
View
B
Retailer 25
-
$2,861 NZD
View
Most Expensive
NZ Jewellers
0fbbc272-3477-4896-9d45-b4c12400f3fe · Sep 5
$3,054 NZD
$1,693 USD
View
Price last confirmed 62 days ago
25 more retailers have this diamond
Prices start from $671 NZDSave up to $2,190 NZD

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
$671 NZD