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Round|Natural|IGI

1.00ct K I1 Round Natural Diamond

EX • K/I1 • IGI 524252181

Shape and cutting style on the report: Round brilliant

Certificate IGI 524252181

Diamond specifications and retailer prices

From £916 GBP
As of November 4, 2026
Save £1,494 GBP (62%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: £2,410 GBP at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1ct natural round diamond

This 1ct natural round sits in the classic one-carat band, graded K colour (faint-tinted) and I1 clarity (included), with a top-tier cut grade and certified by IGI 524252181. Listed at 9 retailers as of November 4, 2026, with prices from £916 to £2,410, a £1,494 spread on the same certified stone. NZ Jewellers lists it at £2,410. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.00
Carat
K
Colour
I1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle35.4°
Pavilion angle40.7°
OriginNatural
Grading LabIGI
CertificateIGI 524252181
Dimensions6.32 × 6.35 × 3.99 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
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Top View
6.32 mm6.35 mm1.00 ctK / I1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI 524252181
Side View
Table 56.0%Crown 35.4°Girdle: MED-STKPavilion 40.7°Culet: NoneDepth 63.0%

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 4
Current: £1,264 GBP|Low: £916 GBP|High: £1,435 GBP|Avg: £1,169 GBP|+1.0%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
November 5, 2026
Retailer 4£916 GBP
Retailer 2£1,051 GBP
Retailer 3£1,175 GBP
Retailer 1£1,264 GBP
Retailer 5£1,435 GBP

20 data points across 5 retailers

9 retailers£916 GBP to £2,410 GBP

B+
Cheapest Retailer
-
£916 GBP
B+
Retailer 2
-
£988 GBP
View
Retailer 3
-
£988 GBP
View
Price last confirmed 8 days ago
B+
Retailer 4
-
£1,033 GBP
View
B+
Retailer 5
-
£1,051 GBP
View
B+
Retailer 6
-
£1,140 GBP
View
B
Retailer 7
-
£1,264 GBP
View
B
Retailer 8
-
£1,435 GBP
View
Most Expensive
C
NZ Jewellers
0ea78399-7f2c-40fd-8ce5-8b3d422b4430 · Nov 5
£2,410 GBP
$3,244 USD
View
8 more retailers have this diamond
Prices start from £916 GBPSave up to £1,494 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+
1.00ct Round
£916 GBP