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Round|Natural|GIA

0.50ct J SI2 Round Natural Diamond

EX • J/SI2 • GIA 1186652488

Certificate GIA 1186652488

Diamond specifications and retailer prices

From $1,358 NZD
As of October 30, 2026
Save $58 NZD (4%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $4,268 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 J colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 1186652488. Listed at 16 retailers as of October 30, 2026, with a relatively tight 4% spread, which is unusual at this carat range and suggests competitive pricing across the listings. 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
J
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishVery Good
SymmetryExcellent
FluorescenceFaint
Crown angle35.5°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 1186652488
Dimensions5.09 × 5.05 × 3.15 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizeNone
Cert comments
Inscription(s): GIA 1186652488
Top View
5.09 mm5.05 mm0.50 ctJ / SI2
OriginNatural
CutExcellent
PolishVery Good
SymmetryExcellent
FluorescenceFaint
CertificateGIA 1186652488
Side View
Table 57.0%Crown 35.5°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 62.1%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: $4,268 NZD|Low: $1,136 NZD|High: $4,268 NZD|Avg: $1,803 NZD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 31, 2026
Retailer 7$1,136 NZD
Retailer 3$1,234 NZD
Retailer 10$1,234 NZD
Retailer 8$1,281 NZD
Retailer 9$1,358 NZD
Retailer 2$1,416 NZD
Retailer 11$1,423 NZD
Retailer 6$1,706 NZD
Retailer 4$1,770 NZD
Retailer 5$2,497 NZD
NZ Jewellers$4,268 NZD

38 data points across 11 retailers

16 retailers$1,358 NZD to $1,416 NZD

Retailer 1
-
$1,126 NZD
Price last confirmed 10 days ago
Retailer 2
-
$1,234 NZD
View
Price last confirmed 12 days ago
Retailer 3
-
$1,234 NZD
View
Price last confirmed 12 days ago
Retailer 4
-
$1,245 NZD
View
Price last confirmed 12 days ago
Retailer 5
-
$1,281 NZD
View
Price last confirmed 12 days ago
B
Retailer 6
-
$1,358 NZD
View
B+
Retailer 7
-
$1,416 NZD
View
Retailer 8
-
$1,423 NZD
View
Price last confirmed 10 days ago
Retailer 9
-
$1,566 NZD
View
Price last confirmed 11 days ago
Retailer 10
-
$1,636 NZD
View
Price last confirmed 9 days ago
Retailer 11
-
$1,706 NZD
View
Price last confirmed 11 days ago
Retailer 12
-
$1,770 NZD
View
Price last confirmed 7 days ago
Retailer 13
-
$1,905 NZD
View
Price last confirmed 11 days ago
Retailer 14
-
$2,497 NZD
View
Price last confirmed 11 days ago
Retailer 15
-
$3,927 NZD
View
Price under review
Most Expensive
NZ Jewellers
bc62ce9a-131a-4946-9f68-65edb1d5b57e · Oct 26
$4,268 NZD
$2,366 USD
View
Price under review
15 more retailers have this diamond
Prices start from $1,358 NZDSave up to $58 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.

B+
0.50ct Round
$1,358 NZD