Round|Natural|GIA

0.50ct I SI1 Round Natural Diamond

ID • I/SI1 • GIA 029

Certificate GIA 029

Diamond specifications and retailer prices

From $391 USD
As of November 6, 2026
Save $1,272 USD (76%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $1,663 USD 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
Color
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: $1,663 USD|Low: $375 USD|High: $1,693 USD|Avg: $683 USD|-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$391 USD
Retailer 12$448 USD
Retailer 13$453 USD
Retailer 3$488 USD
Retailer 9$530 USD
Retailer 6$557 USD
Retailer 8$571 USD
Retailer 7$612 USD
Retailer 11$714 USD
Retailer 10$736 USD
Retailer 4$887 USD
Retailer 5$933 USD
NZ Jewellers$1,663 USD

18 data points across 13 retailers

17 retailers$391 USD to $1,663 USD

A
Cheapest Retailer
-
$391 USD
A
Retailer 2
-
$448 USD
View
A
Retailer 3
-
$453 USD
View
A
Retailer 4
-
$488 USD
View
Final sale: no returns
A
Retailer 5
-
$530 USD
View
Retailer 6
-
$530 USD
View
Price last confirmed 12 days ago
A
Retailer 7
-
$557 USD
View
A
Retailer 8
-
$571 USD
View
Retailer 9
-
$571 USD
View
Price last confirmed 12 days ago
A
Retailer 10
-
$612 USD
View
Retailer 11
-
$612 USD
View
Price last confirmed 10 days ago
B+
Retailer 12
-
$714 USD
View
Retailer 13
-
$736 USD
View
Price last confirmed 11 days ago
Retailer 14
-
$887 USD
View
Price last confirmed 16 days ago
B+
Retailer 15
-
$933 USD
View
B
Retailer 16
-
$1,663 USD
View
Most Expensive
NZ Jewellers
f485ba37-cdda-491a-a342-b36c0c4ed4cc · Oct 26
$1,663 USD
View
Price last confirmed 10 days ago
16 more retailers have this diamond
Prices start from $391 USDSave up to $1,272 USD

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
$391 USD