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Round|Natural|GIA

0.50ct I SI1 Round Natural Diamond

ID • I/SI1 • GIA 029

Certificate GIA 029

Diamond specifications and retailer prices

From $705 NZD
As of November 6, 2026
Save $2,295 NZD (76%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $3,000 NZD at NZ Jewellers · As of October 26, 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. Listed at 17 retailers as of November 4, 2026, with a 325% 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
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 029
Dimensions5.13 × 5.14 × 3.14 mm
L/W Ratio1.00
Top View
5.13 mm5.14 mm0.50 ctI / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 029
Side View
Table 57.0%CrownGirdle: MED-STKPavilionCulet: NoneDepth 60.9%

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: $3,000 NZD|Low: $676 NZD|High: $3,054 NZD|Avg: $1,232 NZD|-1.8%
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
November 6, 2026
Retailer 2$705 NZD
Retailer 12$808 NZD
Retailer 13$817 NZD
Retailer 3$880 NZD
Retailer 9$956 NZD
Retailer 6$1,005 NZD
Retailer 8$1,030 NZD
Retailer 7$1,104 NZD
Retailer 11$1,288 NZD
Retailer 10$1,328 NZD
Retailer 4$1,600 NZD
Retailer 5$1,683 NZD
NZ Jewellers$3,000 NZD

18 data points across 13 retailers

17 retailers$705 NZD to $3,000 NZD

A
Cheapest Retailer
-
$705 NZD
A
Retailer 2
-
$808 NZD
View
A
Retailer 3
-
$817 NZD
View
A
Retailer 4
-
$880 NZD
View
Final sale: no returns
A
Retailer 5
-
$956 NZD
View
Retailer 6
-
$956 NZD
View
Price last confirmed 13 days ago
A
Retailer 7
-
$1,005 NZD
View
A
Retailer 8
-
$1,030 NZD
View
Retailer 9
-
$1,030 NZD
View
Price last confirmed 13 days ago
A
Retailer 10
-
$1,104 NZD
View
Retailer 11
-
$1,104 NZD
View
Price last confirmed 11 days ago
B+
Retailer 12
-
$1,288 NZD
View
Retailer 13
-
$1,328 NZD
View
Price last confirmed 12 days ago
Retailer 14
-
$1,600 NZD
View
Price last confirmed 17 days ago
B+
Retailer 15
-
$1,683 NZD
View
B
Retailer 16
-
$3,000 NZD
View
Most Expensive
NZ Jewellers
f485ba37-cdda-491a-a342-b36c0c4ed4cc · Oct 26
$3,000 NZD
$1,663 USD
View
Price last confirmed 11 days ago
16 more retailers have this diamond
Prices start from $705 NZDSave up to $2,295 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
$705 NZD