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Round|Natural|IGI

0.50ct K SI1 Round Natural Diamond

VG • K/SI1 • IGI 815637045

Shape and cutting style on the report: Round brilliant

Certificate IGI 815637045

Diamond specifications and retailer prices

From £227 GBP
As of November 4, 2026
Save £643 GBP (74%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: £871 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 K colour (faint-tinted) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI 815637045. Listed at 16 retailers as of November 4, 2026, with prices from £227 to £871, a £643 spread on the same certified stone. NZ Jewellers lists it at £871. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

0.50
Carat
K
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle36.5°
Pavilion angle40.8°
OriginNatural
Grading LabIGI
CertificateIGI 815637045
Dimensions4.99 × 5.03 × 3.19 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizeNone
Top View
4.99 mm5.03 mm0.50 ctK / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI 815637045
Side View
Table 57.0%Crown 36.5°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 63.6%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 4
Current: £292 GBP|Low: £241 GBP|High: £531 GBP|Avg: £327 GBP|-1.5%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 6, 2026
Retailer 2£241 GBP
Retailer 8£241 GBP
Retailer 10£253 GBP
Retailer 1£292 GBP
Retailer 3£297 GBP
Retailer 4£311 GBP
Retailer 7£350 GBP
Retailer 5£383 GBP
Retailer 6£394 GBP
Retailer 9£527 GBP

43 data points across 10 retailers

16 retailers£227 GBP to £871 GBP

A
Cheapest Retailer
-
£227 GBP
Retailer 2
-
£241 GBP
View
Price last confirmed 16 days ago
Retailer 3
-
£244 GBP
View
Price last confirmed 8 days ago
B+
Retailer 4
-
£253 GBP
View
B+
Retailer 5
-
£292 GBP
View
B+
Retailer 6
-
£297 GBP
View
B+
Retailer 7
-
£305 GBP
View
B+
Retailer 8
-
£311 GBP
View
Retailer 9
-
£314 GBP
View
Price last confirmed 9 days ago
B+
Retailer 10
-
£324 GBP
View
Retailer 11
-
£350 GBP
View
Price last confirmed 7 days ago
B+
Retailer 12
-
£378 GBP
View
B+
Retailer 13
-
£383 GBP
View
B+
Retailer 14
-
£394 GBP
View
Retailer 15
-
£527 GBP
View
Price last confirmed 8 days ago
Most Expensive
C
NZ Jewellers
0393634c-e239-4a05-9dab-ce5cf1fd9e2b · Nov 4
£871 GBP
$1,172 USD
View
15 more retailers have this diamond
Prices start from £227 GBPSave up to £643 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
£227 GBP