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Round|Natural|IGI

1.50ct K I1 Round Natural Diamond

GD • K/I1 • IGI 586340912

Shape and cutting style on the report: Round brilliant

Certificate IGI 586340912

Diamond specifications and retailer prices

From £1,062 GBP
As of November 4, 2026
Save £2,314 GBP (69%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: £3,377 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 standard cut grade and certified by IGI 586340912. Listed at 9 retailers as of November 4, 2026, with prices from £1,062 to £3,377, a £2,314 spread on the same certified stone. NZ Jewellers lists it at £3,377. 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

1.50
Carat
K
Colour
I1
Clarity
Good
Cut

Specifications

CutGood
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle35.6°
Pavilion angle42.1°
OriginNatural
Grading LabIGI
CertificateIGI 586340912
Dimensions7.09 × 7.18 × 4.56 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Top View
7.09 mm7.18 mm1.50 ctK / I1
OriginNatural
CutGood
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI 586340912
Side View
Table 65.0%Crown 35.6°Girdle: STK-VTKPavilion 42.1°Culet: NoneDepth 63.9%

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: £3,377 GBP|Low: £1,061 GBP|High: £3,377 GBP|Avg: £1,662 GBP|+2.2%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 5, 2026
Retailer 3£1,062 GBP
Retailer 8£1,262 GBP
Retailer 6£1,384 GBP
Retailer 7£1,384 GBP
Retailer 4£1,448 GBP
Retailer 9£1,452 GBP
Retailer 5£1,597 GBP
Retailer 2£1,876 GBP
NZ Jewellers£3,377 GBP

45 data points across 9 retailers

9 retailers£1,062 GBP to £3,377 GBP

B+
Cheapest Retailer
-
£1,062 GBP
B+
Retailer 2
-
£1,262 GBP
View
B+
Retailer 3
-
£1,384 GBP
View
Retailer 4
-
£1,384 GBP
View
Price last confirmed 8 days ago
B+
Retailer 5
-
£1,448 GBP
View
B+
Retailer 6
-
£1,452 GBP
View
B+
Retailer 7
-
£1,597 GBP
View
B+
Retailer 8
-
£1,876 GBP
View
Most Expensive
C
NZ Jewellers
b6602caf-7782-4266-99d3-3a93b8246885 · Nov 5
£3,377 GBP
$4,545 USD
View
8 more retailers have this diamond
Prices start from £1,062 GBPSave up to £2,314 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
£1,062 GBP