CaratHunter
Plans
Round|Natural|IGI

1.51ct K I1 Round Natural Diamond

EX • K/I1 • IGI 474139848

Shape and cutting style on the report: Round brilliant

Certificate IGI 474139848

Diamond specifications and retailer prices

From £1,140 GBP
As of November 5, 2026
Save £1,911 GBP (63%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: £3,051 GBP at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.51ct natural round diamond

This 1.51ct natural round sits in the one-and-a-half to two carat band, graded K colour (faint-tinted) and I1 clarity (included), with a top-tier cut grade and certified by IGI 474139848. Listed at 7 retailers as of November 5, 2026, with prices from £1,140 to £3,051, a £1,911 spread on the same certified stone. NZ Jewellers lists it at £3,051. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.51
Carat
K
Colour
I1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle31.8°
Pavilion angle41.2°
OriginNatural
Grading LabIGI
CertificateIGI 474139848
Dimensions7.48 × 7.49 × 4.47 mm
L/W Ratio1.00
Culet sizePointed
Top View
7.48 mm7.49 mm1.51 ctK / I1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 474139848
Side View
Table 59.5%Crown 31.8°Girdle: MediumPavilion 41.2°Culet: NoneDepth 59.7%

Caratlytics Score

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

Price History

Last verified: Nov 5
Current: £3,051 GBP|Low: £956 GBP|High: £3,051 GBP|Avg: £1,495 GBP|+4.1%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 5, 2026
Retailer 9£956 GBP
Retailer 7£1,140 GBP
Retailer 4£1,251 GBP
Retailer 5£1,251 GBP
Retailer 6£1,308 GBP
Retailer 3£1,444 GBP
Retailer 8£1,447 GBP
Retailer 2£1,696 GBP
NZ Jewellers£3,051 GBP

24 data points across 9 retailers

7 retailers£1,140 GBP to £3,051 GBP

A
Cheapest Retailer
-
£1,140 GBP
Retailer 2
-
£1,251 GBP
View
Price last confirmed 8 days ago
B+
Retailer 3
-
£1,251 GBP
View
B+
Retailer 4
-
£1,308 GBP
View
B+
Retailer 5
-
£1,444 GBP
View
B+
Retailer 6
-
£1,696 GBP
View
Most Expensive
B
NZ Jewellers
3510f7a4-7b97-4514-9f30-8fb8fedf16cd · Nov 5
£3,051 GBP
$4,106 USD
View
6 more retailers have this diamond
Prices start from £1,140 GBPSave up to £1,911 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
1.51ct Round
£1,140 GBP