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Round|Natural|IGI

0.51ct K I1 Round Natural Diamond

EX • K/I1 • IGI 841682443

Shape and cutting style on the report: Round brilliant

Certificate IGI 841682443

Diamond specifications and retailer prices

From £105 GBP
As of November 6, 2026
Save £556 GBP (84%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: £661 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 K colour (faint-tinted) and I1 clarity (included), with a top-tier cut grade and certified by IGI 841682443. Listed at 7 retailers as of November 4, 2026, with prices from £105 to £661, a £556 spread on the same certified stone. NZ Jewellers lists it at £661. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

0.51
Carat
K
Colour
I1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle35°
Pavilion angle41°
OriginNatural
Grading LabIGI
CertificateIGI 841682443
Dimensions5.04 × 5.09 × 3.13 mm
L/W Ratio1.01
Girdle conditionFaceted
Top View
5.04 mm5.09 mm0.51 ctK / I1
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateIGI 841682443
Side View
Table 61.0%Crown 35°Girdle: STK-THKPavilion 41°CuletDepth 61.8%

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 6
Current: £661 GBP|Low: £105 GBP|High: £698 GBP|Avg: £254 GBP|-5.3%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 6, 2026
Retailer 2£105 GBP
Retailer 5£146 GBP
Retailer 7£161 GBP
Retailer 6£163 GBP
Retailer 3£196 GBP
Retailer 4£301 GBP
NZ Jewellers£661 GBP

20 data points across 7 retailers

7 retailers£105 GBP to £661 GBP

A
Cheapest Retailer
-
£105 GBP
B+
Retailer 2
-
£146 GBP
View
Retailer 3
-
£161 GBP
View
Price last confirmed 8 days ago
B+
Retailer 4
-
£163 GBP
View
B+
Retailer 5
-
£196 GBP
View
B+
Retailer 6
-
£301 GBP
View
Most Expensive
C
NZ Jewellers
802c2830-9604-430e-b256-7e4d11f6f2de · Nov 4
£661 GBP
$889 USD
View
6 more retailers have this diamond
Prices start from £105 GBPSave up to £556 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
0.51ct Round
£105 GBP