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Round|Natural|GIA

0.50ct I SI1 Round Natural Diamond

EX • I/SI1 • GIA 2557722338

Certificate GIA 2557722338

Diamond specifications and retailer prices

From $839 NZD
As of November 6, 2026
Save $2,939 NZD (78%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $3,777 NZD 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 2557722338. Listed at 20 retailers as of November 4, 2026, with prices from $839 to $3,777, a $2,939 spread on the same certified stone. NZ Jewellers lists it at $3,777. 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 angle34°
Pavilion angle41.8°
OriginNatural
Grading LabGIA
CertificateGIA 2557722338
Dimensions5.06 × 5.09 × 3.18 mm
L/W Ratio1.01
Culet sizeNone
Key to symbols
Crystal, Feather
Top View
5.06 mm5.09 mm0.50 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2557722338
Side View
Table 59.0%Crown 34°Girdle: MED-STKPavilion 41.8°Culet: NoneDepth 62.6%

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: $1,550 NZD|Low: $839 NZD|High: $2,814 NZD|Avg: $1,686 NZD|-1.5%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 6, 2026
Retailer 7$839 NZD
Retailer 6$1,434 NZD
Retailer 2$1,463 NZD
Retailer 1$1,550 NZD
Retailer 3$1,600 NZD
Retailer 8$1,809 NZD
Retailer 4$1,858 NZD
Retailer 5$2,778 NZD

38 data points across 8 retailers

20 retailers$839 NZD to $3,777 NZD

A
Cheapest Retailer
-
$839 NZD
Final sale: no returns
A
Retailer 2
-
$1,091 NZD
View
A
Retailer 3
-
$1,126 NZD
View
A
Retailer 4
-
$1,136 NZD
View
Retailer 5
-
$1,174 NZD
View
Price last confirmed 22 days ago
B+
Retailer 6
-
$1,174 NZD
View
B+
Retailer 7
-
$1,259 NZD
View
B+
Retailer 8
-
$1,292 NZD
View
B+
Retailer 9
-
$1,333 NZD
View
B
Retailer 10
-
$1,434 NZD
View
B+
Retailer 11
-
$1,440 NZD
View
B+
Retailer 12
-
$1,463 NZD
View
B+
Retailer 13
-
$1,524 NZD
View
B+
Retailer 14
-
$1,550 NZD
View
B+
Retailer 15
-
$1,600 NZD
View
Retailer 16
-
$1,809 NZD
View
Price last confirmed 34 days ago
B
Retailer 17
-
$1,858 NZD
View
B
Retailer 18
-
$2,778 NZD
View
B
Retailer 19
-
$3,456 NZD
View
Most Expensive
B
NZ Jewellers
c7a7a72c-47a7-450f-9917-1a85d6288ba6 · Nov 4
$3,777 NZD
$2,094 USD
View
19 more retailers have this diamond
Prices start from $839 NZDSave up to $2,939 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
$839 NZD