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Round|Natural|GIA

0.50ct I SI2 Round Natural Diamond

EX • I/SI2 • GIA 6502912503

Certificate GIA 6502912503

Diamond specifications and retailer prices

From $1,063 NZD
$599 USD
As of October 31, 2026
Save $1,265 NZD (54%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $3,985 NZD at NZ Jewellers · As of October 30, 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 SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6502912503. Listed at 16 retailers as of October 31, 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
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle34.5°
Pavilion angle41.6°
OriginNatural
Grading LabGIA
CertificateGIA 6502912503
Dimensions5.09 × 5.06 × 3.16 mm
L/W Ratio1.01
Star length50%
Lower girdle80%
Top View
5.09 mm5.06 mm0.50 ctI / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 6502912503
Side View
Table 59.0%Crown 34.5°Girdle: MED-STKPavilion 41.6°Culet: NoneDepth 62.3%

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: Oct 31
Current: $1,796 NZD|Low: $1,063 NZD|High: $2,328 NZD|Avg: $1,443 NZD|+0.1%
Retailer 1
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
November 1, 2026
Retailer 3$1,063 NZD
Retailer 11$1,152 NZD
Retailer 7$1,184 NZD
Retailer 2$1,198 NZD
Retailer 13$1,240 NZD
Retailer 12$1,346 NZD
Retailer 5$1,402 NZD
Retailer 6$1,402 NZD
Retailer 14$1,427 NZD
Retailer 10$1,503 NZD
Retailer 8$1,518 NZD
Retailer 15$1,600 NZD
Retailer 1$1,796 NZD
Retailer 4$1,927 NZD
Retailer 9$2,328 NZD

6 data points across 15 retailers

16 retailers$1,063 NZD to $2,328 NZD

A
Cheapest Retailer
-
$1,063 NZD
$599 USD
Final sale: no returns
A
Retailer 2
-
$1,152 NZD
$649 USD
View
B+
Retailer 3
-
$1,198 NZD
$675 USD
View
B+
Retailer 4
-
$1,240 NZD
$699 USD
View
B+
Retailer 5
-
$1,329 NZD
$749 USD
View
B+
Retailer 6
-
$1,346 NZD
$758 USD
View
B+
Retailer 7
-
$1,402 NZD
$790 USD
View
B+
Retailer 8
-
$1,402 NZD
$790 USD
View
B+
Retailer 9
-
$1,427 NZD
$804 USD
View
B+
Retailer 10
-
$1,455 NZD
$820 USD
View
B+
Retailer 11
-
$1,503 NZD
£667 GBP
View
B+
Retailer 12
-
$1,518 NZD
£673 GBP
View
B+
Retailer 13
-
$1,600 NZD
£710 GBP
View
B
Retailer 14
-
$1,796 NZD
€964 EUR
View
B
Retailer 15
-
$2,328 NZD
£1,033 GBP
View
Most Expensive
NZ Jewellers
07fa4f46-aa76-4211-b36b-68fa8ef509da · Oct 30
$3,985 NZD
$2,246 USD
View
Price under review
15 more retailers have this diamond
Prices start from $1,063 NZDSave up to $1,265 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
$1,063 NZD