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Round|Natural|GIA

0.50ct I SI1 Round Natural Diamond

EX • I/SI1 • GIA 6551506419

Certificate GIA 6551506419

Diamond specifications and retailer prices

From $1,145 NZD
As of November 6, 2026
Save $1,380 NZD (55%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $4,333 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 6551506419. Listed at 21 retailers as of November 4, 2026, with a 120% 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
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 6551506419
Dimensions5.02 × 5.06 × 3.11 mm
L/W Ratio1.01
Culet sizeNone
Key to symbols
Feather
Top View
5.02 mm5.06 mm0.50 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6551506419
Side View
Table 61.0%Crown 35.5°Girdle: Slightly ThickPavilion 40.8°Culet: NoneDepth 61.7%

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: $1,634 NZD|Low: $880 NZD|High: $2,560 NZD|Avg: $1,720 NZD|+4.9%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 6, 2026
Retailer 8$1,154 NZD
Retailer 10$1,301 NZD
Retailer 2$1,375 NZD
Retailer 7$1,578 NZD
Retailer 1$1,634 NZD
Retailer 3$1,752 NZD
Retailer 4$1,777 NZD
Retailer 9$2,076 NZD
Retailer 5$2,132 NZD
Retailer 6$2,525 NZD

44 data points across 10 retailers

21 retailers$1,145 NZD to $2,525 NZD

A
Cheapest Retailer
-
$1,145 NZD
B+
Retailer 2
-
$1,154 NZD
View
Final sale: no returns
Retailer 3
-
$1,228 NZD
View
Price last confirmed 27 days ago
Retailer 4
-
$1,252 NZD
View
Price last confirmed 9 days ago
B+
Retailer 5
-
$1,252 NZD
View
B+
Retailer 6
-
$1,270 NZD
View
B+
Retailer 7
-
$1,301 NZD
View
B+
Retailer 8
-
$1,375 NZD
View
B+
Retailer 9
-
$1,445 NZD
View
B
Retailer 10
-
$1,578 NZD
View
B+
Retailer 11
-
$1,634 NZD
View
B+
Retailer 12
-
$1,661 NZD
View
B+
Retailer 13
-
$1,752 NZD
View
B+
Retailer 14
-
$1,777 NZD
View
B
Retailer 15
-
$1,928 NZD
View
B
Retailer 16
-
$1,934 NZD
View
Retailer 17
-
$2,076 NZD
View
Price last confirmed 33 days ago
B
Retailer 18
-
$2,132 NZD
View
B
Retailer 19
-
$2,525 NZD
View
Retailer 20
-
$3,988 NZD
View
Price under review
Most Expensive
NZ Jewellers
e0438737-15b9-4ae5-b609-315943596b88 · Nov 4
$4,333 NZD
$2,402 USD
View
Price under review
20 more retailers have this diamond
Prices start from $1,145 NZDSave up to $1,380 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
$1,145 NZD