Round|Natural|GIA

0.50ct I SI1 Round Natural Diamond

ID • I/SI1 • GIA 029

Certificate GIA 029

Diamond specifications and retailer prices

From €350 EUR
As of November 6, 2026
Save €1,139 EUR (76%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: €1,489 EUR 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: €1,489 EUR|Low: €336 EUR|High: €1,516 EUR|Avg: €611 EUR|-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€350 EUR
Retailer 12€401 EUR
Retailer 13€406 EUR
Retailer 3€437 EUR
Retailer 9€475 EUR
Retailer 6€499 EUR
Retailer 8€511 EUR
Retailer 7€548 EUR
Retailer 11€640 EUR
Retailer 10€659 EUR
Retailer 4€794 EUR
Retailer 5€836 EUR
NZ Jewellers€1,489 EUR

18 data points across 13 retailers

17 retailers€350 EUR to €1,489 EUR

A
Cheapest Retailer
-
€350 EUR
A
Retailer 2
-
€401 EUR
View
A
Retailer 3
-
€406 EUR
View
A
Retailer 4
-
€437 EUR
View
Final sale: no returns
A
Retailer 5
-
€475 EUR
View
Retailer 6
-
€475 EUR
View
Price last confirmed 12 days ago
A
Retailer 7
-
€499 EUR
View
A
Retailer 8
-
€511 EUR
View
Retailer 9
-
€511 EUR
View
Price last confirmed 12 days ago
A
Retailer 10
-
€548 EUR
View
Retailer 11
-
€548 EUR
View
Price last confirmed 10 days ago
B+
Retailer 12
-
€640 EUR
View
Retailer 13
-
€659 EUR
View
Price last confirmed 11 days ago
Retailer 14
-
€794 EUR
View
Price last confirmed 16 days ago
B+
Retailer 15
-
€836 EUR
View
B
Retailer 16
-
€1,489 EUR
View
Most Expensive
NZ Jewellers
f485ba37-cdda-491a-a342-b36c0c4ed4cc · Oct 26
€1,489 EUR
$1,663 USD
View
Price last confirmed 11 days ago
16 more retailers have this diamond
Prices start from €350 EURSave up to €1,139 EUR

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
€350 EUR