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Round|Natural|IGI

0.50ct K I1 Round Natural Diamond

VG • K/I1 • IGI 516251422

Shape and cutting style on the report: Round brilliant

Certificate IGI 516251422

Diamond specifications and retailer prices

From £155 GBP
As of November 4, 2026
Save £547 GBP (78%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: £702 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 I1 clarity (included), with a very-good cut grade and certified by IGI 516251422. Listed at 8 retailers as of November 4, 2026, with prices from £155 to £702, a £547 spread on the same certified stone. NZ Jewellers lists it at £702. 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
I1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.5°
Pavilion angle40.7°
OriginNatural
Grading LabIGI
CertificateIGI 516251422
Dimensions5.03 × 5.04 × 3.11 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizeNone
Cert comments
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Top View
5.03 mm5.04 mm0.50 ctK / I1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 516251422
Side View
Table 59.0%Crown 33.5°Girdle: UNDPavilion 40.7°Culet: NoneDepth 61.7%

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 4
Current: £314 GBP|Low: £155 GBP|High: £317 GBP|Avg: £226 GBP|+2.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
November 5, 2026
Retailer 2£157 GBP
Retailer 3£204 GBP
Retailer 4£233 GBP
Retailer 1£314 GBP

15 data points across 4 retailers

8 retailers£155 GBP to £702 GBP

B+
Cheapest Retailer
-
£155 GBP
Retailer 2
-
£167 GBP
View
Price last confirmed 8 days ago
B+
Retailer 3
-
£173 GBP
View
B+
Retailer 4
-
£198 GBP
View
B+
Retailer 5
-
£204 GBP
View
B+
Retailer 6
-
£209 GBP
View
B+
Retailer 7
-
£314 GBP
View
Most Expensive
C
NZ Jewellers
88c3bc5f-319c-4e14-aa86-25b1fd23e793 · Nov 4
£702 GBP
$945 USD
View
7 more retailers have this diamond
Prices start from £155 GBPSave up to £547 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
£155 GBP