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Round|Natural|IGI

0.50ct M I1 Round Natural Diamond

EX • M/I1 • IGI 839658738

Shape and cutting style on the report: Round brilliant

Certificate IGI 839658738

Diamond specifications and retailer prices

From £143 GBP
As of November 5, 2026
Save £768 GBP (84%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: £910 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 M colour (faint-tinted) and I1 clarity (included), with a top-tier cut grade and certified by IGI 839658738. Listed at 6 retailers as of November 4, 2026, with prices from £143 to £910, a £768 spread on the same certified stone. NZ Jewellers lists it at £910. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

0.50
Carat
M
Colour
I1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishVery Good
SymmetryExcellent
FluorescenceNone
Crown angle34.8°
Pavilion angle40.4°
OriginNatural
Grading LabIGI
CertificateIGI 839658738
Dimensions5.08 × 5.11 × 3.09 mm
L/W Ratio1.01
Girdle conditionFaceted
Cert comments
IDEAL CUT ROUND BRILLIANT
Top View
5.08 mm5.11 mm0.50 ctM / I1
OriginNatural
CutExcellent
PolishVery Good
SymmetryExcellent
FluorescenceNone
CertificateIGI 839658738
Side View
Table 59.0%Crown 34.8°Girdle: MED-STKPavilion 40.4°CuletDepth 60.6%

Caratlytics Score

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

Price History

Last verified: Nov 5
Current: £910 GBP|Low: £143 GBP|High: £910 GBP|Avg: £310 GBP
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 5, 2026
Retailer 2£143 GBP
Retailer 6£201 GBP
Retailer 4£224 GBP
Retailer 3£270 GBP
Retailer 5£386 GBP
NZ Jewellers£910 GBP

12 data points across 6 retailers

6 retailers£143 GBP to £910 GBP

B+
Cheapest Retailer
-
£143 GBP
B+
Retailer 2
-
£201 GBP
View
B+
Retailer 3
-
£224 GBP
View
B+
Retailer 4
-
£270 GBP
View
B
Retailer 5
-
£386 GBP
View
Most Expensive
C
NZ Jewellers
be2e4f59-51d4-4928-9abb-f1115fc4e33e · Nov 4
£910 GBP
$1,225 USD
View
5 more retailers have this diamond
Prices start from £143 GBPSave up to £768 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.

B+
0.50ct Round
£143 GBP