Round|Natural|GIA

0.50ct I SI1 Round Natural Diamond

EX • I/SI1 • GIA 6422948574

Certificate GIA 6422948574

Diamond specifications and retailer prices

From £344 GBP
As of November 6, 2026
Save £1,173 GBP (77%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: £1,517 GBP 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 6422948574. Listed at 22 retailers as of November 4, 2026, with prices from £344 to £1,517, a £1,173 spread on the same certified stone. NZ Jewellers lists it at £1,517. 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 angle34°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 6422948574
Dimensions5.13 × 5.10 × 3.11 mm
L/W Ratio1.01
Top View
5.13 mm5.10 mm0.50 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6422948574
Side View
Table 58.0%Crown 34°Girdle: MED-STKPavilion 40.8°Culet: 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: £344 GBP|Low: £344 GBP|High: £1,130 GBP|Avg: £632 GBP|-2.7%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 1£344 GBP
Retailer 3£445 GBP
Retailer 9£478 GBP
Retailer 5£494 GBP
Retailer 6£586 GBP
Retailer 11£592 GBP
Retailer 4£622 GBP
Retailer 2£624 GBP
Retailer 7£625 GBP
Retailer 8£746 GBP
Retailer 10£1,116 GBP

28 data points across 11 retailers

22 retailers£344 GBP to £1,517 GBP

A
Cheapest Retailer
-
£344 GBP
A
Retailer 2
-
£401 GBP
View
A
Retailer 3
-
£445 GBP
View
Final sale: no returns
A
Retailer 4
-
£457 GBP
View
B+
Retailer 5
-
£478 GBP
View
B+
Retailer 6
-
£483 GBP
View
B+
Retailer 7
-
£494 GBP
View
B+
Retailer 8
-
£521 GBP
View
B+
Retailer 9
-
£558 GBP
View
B+
Retailer 10
-
£559 GBP
View
B+
Retailer 11
-
£582 GBP
View
B+
Retailer 12
-
£586 GBP
View
B+
Retailer 13
-
£592 GBP
View
B+
Retailer 14
-
£622 GBP
View
B
Retailer 15
-
£624 GBP
View
B+
Retailer 16
-
£625 GBP
View
B
Retailer 17
-
£666 GBP
View
Retailer 18
-
£727 GBP
View
Price last confirmed 32 days ago
B+
Retailer 19
-
£746 GBP
View
B
Retailer 20
-
£751 GBP
View
B
Retailer 21
-
£1,116 GBP
View
Most Expensive
B
NZ Jewellers
b6c2ede9-d08b-4312-aa26-450d9b06516b · Nov 4
£1,517 GBP
$2,030 USD
View
21 more retailers have this diamond
Prices start from £344 GBPSave up to £1,173 GBP

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
£344 GBP