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Round|Natural|IGI

0.50ct M SI2 Round Natural Diamond

EX • M/SI2 • IGI 675518034

Shape and cutting style on the report: Round brilliant

Certificate IGI 675518034

Diamond specifications and retailer prices

From £169 GBP
As of November 4, 2026
Save £598 GBP (78%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £780 GBP at NZ Jewellers · As of August 31, 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 SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI 675518034. Listed at 10 retailers as of November 4, 2026, with a 353% 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
M
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.2°
Pavilion angle41.2°
OriginNatural
Grading LabIGI
CertificateIGI 675518034
Dimensions5.08 × 5.11 × 3.11 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Top View
5.08 mm5.11 mm0.50 ctM / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 675518034
Side View
Table 58.0%Crown 32.2°Girdle: MED-STKPavilion 41.2°Culet: NoneDepth 61.0%

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 4
Current: £768 GBP|Low: £169 GBP|High: £768 GBP|Avg: £295 GBP
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 6, 2026
Retailer 5£169 GBP
Retailer 7£183 GBP
Retailer 4£189 GBP
Retailer 2£212 GBP
Retailer 6£228 GBP
Retailer 9£268 GBP
Retailer 10£281 GBP
Retailer 3£337 GBP
Retailer 8£384 GBP
NZ Jewellers£768 GBP

36 data points across 10 retailers

10 retailers£169 GBP to £768 GBP

A
Cheapest Retailer
-
£169 GBP
Retailer 2
-
£183 GBP
View
Price last confirmed 8 days ago
B+
Retailer 3
-
£189 GBP
View
A
Retailer 4
-
£212 GBP
View
B+
Retailer 5
-
£228 GBP
View
Retailer 6
-
£232 GBP
View
Price last confirmed 66 days ago
B+
Retailer 7
-
£337 GBP
View
B
Retailer 8
-
£384 GBP
View
C
Retailer 9
-
£768 GBP
View
Most Expensive
NZ Jewellers
b5074ff3-4259-43d8-aac8-fc305bcd1994 · Aug 31
£780 GBP
$1,050 USD
View
Price last confirmed 66 days ago
9 more retailers have this diamond
Prices start from £169 GBPSave up to £598 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
£169 GBP