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Round|Natural|IGI

0.51ct L I1 Round Natural Diamond

VG • L/I1 • IGI 510166168

Shape and cutting style on the report: Round brilliant

Certificate IGI 510166168

Diamond specifications and retailer prices

From £198 GBP
As of November 5, 2026
Save £699 GBP (78%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: £898 GBP at NZ Jewellers · As of November 4, 2026
View at NZ Jewellers

About this 0.51ct natural round diamond

This 0.51ct natural round sits in the half to three-quarter carat band, graded L colour (faint-tinted) and I1 clarity (included), with a very-good cut grade and certified by IGI 510166168. Listed at 8 retailers as of November 4, 2026, with prices from £198 to £898, a £699 spread on the same certified stone. NZ Jewellers lists it at £898. 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

0.51
Carat
L
Colour
I1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishVery Good
SymmetryExcellent
FluorescenceFaint
Crown angle32.7°
Pavilion angle41.5°
OriginNatural
Grading LabIGI
CertificateIGI 510166168
Dimensions5.09 × 5.12 × 3.16 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
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Top View
5.09 mm5.12 mm0.51 ctL / I1
OriginNatural
CutVery Good
PolishVery Good
SymmetryExcellent
FluorescenceFaint
CertificateIGI 510166168
Side View
Table 58.0%Crown 32.7°Girdle: MED-THKPavilion 41.5°Culet: NoneDepth 62.0%

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: £332 GBP|Low: £206 GBP|High: £336 GBP|Avg: £278 GBP|+2.1%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
November 5, 2026
Retailer 2£207 GBP
Retailer 3£270 GBP
Retailer 4£304 GBP
Retailer 1£332 GBP

15 data points across 4 retailers

8 retailers£198 GBP to £898 GBP

B+
Cheapest Retailer
-
£198 GBP
Retailer 2
-
£213 GBP
View
Price last confirmed 8 days ago
B+
Retailer 3
-
£221 GBP
View
B+
Retailer 4
-
£262 GBP
View
B+
Retailer 5
-
£267 GBP
View
B+
Retailer 6
-
£270 GBP
View
B
Retailer 7
-
£332 GBP
View
Most Expensive
C
NZ Jewellers
0156d9bf-f26d-4aa4-9541-84665cb34891 · Nov 4
£898 GBP
$1,208 USD
View
7 more retailers have this diamond
Prices start from £198 GBPSave up to £699 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+
0.51ct Round
£198 GBP