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Round|Natural|GIA

0.50ct H SI2 Round Natural Diamond

EX • H/SI2 • GIA 1545727521

Certificate GIA 1545727521

Diamond specifications and retailer prices

From $830 NZD
As of November 6, 2026
Save $1,780 NZD (68%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: $3,730 NZD at NZ Jewellers · As of September 11, 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 H colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 1545727521. Listed at 22 retailers as of November 4, 2026, with a 215% 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
H
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 1545727521
Dimensions5.07 × 5.09 × 3.11 mm
L/W Ratio1.00
Key to symbols
Feather, Twinning Wisp
Top View
5.07 mm5.09 mm0.50 ctH / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1545727521
Side View
Table 58.0%Crown 34°Girdle: VTK-VTKPavilion 40.8°Culet: NoneDepth 61.3%

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: Nov 6
Current: $3,550 NZD|Low: $830 NZD|High: $3,575 NZD|Avg: $1,455 NZD|-0.7%
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
November 6, 2026
Retailer 2$830 NZD
Retailer 5$945 NZD
Retailer 6$1,043 NZD
Retailer 9$1,072 NZD
Retailer 8$1,090 NZD
Retailer 3$1,133 NZD
Retailer 4$1,173 NZD
Retailer 17$1,219 NZD
Retailer 18$1,219 NZD
Retailer 7$1,306 NZD
Retailer 10$1,360 NZD
Retailer 16$1,369 NZD
Retailer 12$1,373 NZD
Retailer 13$1,396 NZD
Retailer 11$1,456 NZD
Retailer 14$1,504 NZD
Retailer 15$2,610 NZD
NZ Jewellers$3,550 NZD

22 data points across 18 retailers

22 retailers$830 NZD to $2,610 NZD

A
Cheapest Retailer
-
$830 NZD
A
Retailer 2
-
$945 NZD
View
A
Retailer 3
-
$1,043 NZD
View
Final sale: no returns
A
Retailer 4
-
$1,072 NZD
View
A
Retailer 5
-
$1,090 NZD
View
Retailer 6
-
$1,133 NZD
View
Price last confirmed 9 days ago
A
Retailer 7
-
$1,133 NZD
View
A
Retailer 8
-
$1,173 NZD
View
Retailer 9
-
$1,219 NZD
View
Price last confirmed 8 days ago
Retailer 10
-
$1,219 NZD
View
Price last confirmed 9 days ago
Retailer 11
-
$1,306 NZD
View
Price last confirmed 10 days ago
B+
Retailer 12
-
$1,360 NZD
View
B+
Retailer 13
-
$1,369 NZD
View
Retailer 14
-
$1,373 NZD
View
Price last confirmed 60 days ago
B+
Retailer 15
-
$1,373 NZD
View
B+
Retailer 16
-
$1,396 NZD
View
B+
Retailer 17
-
$1,456 NZD
View
B+
Retailer 18
-
$1,504 NZD
View
B
Retailer 19
-
$2,610 NZD
View
Retailer 20
-
$3,550 NZD
View
Price last confirmed 11 days ago
Retailer 21
-
$3,550 NZD
View
Price last confirmed 7 days ago
Most Expensive
NZ Jewellers
c37556e1-65eb-46b2-9c16-fc722d77a7a1 · Sep 11
$3,730 NZD
$2,068 USD
View
Price last confirmed 56 days ago
21 more retailers have this diamond
Prices start from $830 NZDSave up to $1,780 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
$830 NZD