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Round|Natural|IGI

1.50ct K I1 Round Natural Diamond

EX • K/I1 • IGI 586338304

Shape and cutting style on the report: Round brilliant

Certificate IGI 586338304

Diamond specifications and retailer prices

From £1,665 GBP
As of November 6, 2026
Save £2,189 GBP (57%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: £3,854 GBP at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.5ct natural round diamond

This 1.5ct 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 586338304. Listed at 8 retailers as of November 5, 2026, with prices from £1,665 to £3,854, a £2,189 spread on the same certified stone. NZ Jewellers lists it at £3,854. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.50
Carat
K
Colour
I1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle35.2°
Pavilion angle40.2°
OriginNatural
Grading LabIGI
CertificateIGI 586338304
Dimensions7.23 × 7.35 × 4.49 mm
L/W Ratio1.02
Girdle conditionFaceted
Culet sizePointed
Top View
7.23 mm7.35 mm1.50 ctK / I1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateIGI 586338304
Side View
Table 58.0%Crown 35.2°Girdle: MED-STKPavilion 40.2°Culet: NoneDepth 61.4%

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 6
Current: £3,854 GBP|Low: £1,224 GBP|High: £3,854 GBP|Avg: £2,104 GBP
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 5, 2026
Retailer 10£1,224 GBP
Retailer 3£1,665 GBP
Retailer 6£1,843 GBP
Retailer 8£1,843 GBP
Retailer 4£1,929 GBP
Retailer 5£1,940 GBP
Retailer 7£2,127 GBP
Retailer 9£2,193 GBP
Retailer 2£2,285 GBP
NZ Jewellers£3,854 GBP

21 data points across 10 retailers

8 retailers£1,665 GBP to £3,854 GBP

B+
Cheapest Retailer
-
£1,665 GBP
Retailer 2
-
£1,843 GBP
View
Price last confirmed 8 days ago
B+
Retailer 3
-
£1,843 GBP
View
B+
Retailer 4
-
£1,929 GBP
View
B+
Retailer 5
-
£1,940 GBP
View
B+
Retailer 6
-
£2,127 GBP
View
B+
Retailer 7
-
£2,285 GBP
View
Most Expensive
B
NZ Jewellers
d16037b2-c3c9-4850-b099-151c83f25c5f · Nov 5
£3,854 GBP
$5,187 USD
View
7 more retailers have this diamond
Prices start from £1,665 GBPSave up to £2,189 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+
1.50ct Round
£1,665 GBP