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Heart|Natural|IGI

1.50ct K SI1 Heart Natural Diamond

VG • K/SI1 • IGI 768623506

Shape and cutting style on the report: Heart brilliant

Certificate IGI 768623506

Diamond specifications and retailer prices

From £1,762 GBP
As of November 6, 2026
Save £2,564 GBP (59%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £4,327 GBP at NZ Jewellers · As of November 3, 2026
View at NZ Jewellers

About this 1.5ct natural heart diamond

This 1.5ct natural heart sits in the one-and-a-half to two carat band, graded K colour (faint-tinted) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI 768623506. Listed at 11 retailers as of November 3, 2026, with prices from £1,762 to £4,327, a £2,564 spread on the same certified stone. NZ Jewellers lists it at £4,327. 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
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.9°
Pavilion angle38.4°
OriginNatural
Grading LabIGI
CertificateIGI 768623506
Dimensions7.24 × 7.89 × 4.41 mm
L/W Ratio1.09
Girdle conditionFaceted
Top View
7.24 mm7.89 mm1.50 ctK / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 768623506
Side View
Table 60.0%Crown 35.9°Girdle: MED-THKPavilion 38.4°CuletDepth 55.9%

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 6
Current: £1,762 GBP|Low: £1,762 GBP|High: £3,669 GBP|Avg: £2,439 GBP|-2.0%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 6, 2026
Retailer 1£1,762 GBP
Retailer 2£2,007 GBP
Retailer 6£2,069 GBP
Retailer 4£2,525 GBP
Retailer 3£2,559 GBP
Retailer 5£3,625 GBP

37 data points across 6 retailers

11 retailers£1,762 GBP to £4,327 GBP

A
Cheapest Retailer
-
£1,762 GBP
B+
Retailer 2
-
£2,007 GBP
View
B+
Retailer 3
-
£2,069 GBP
View
B+
Retailer 4
-
£2,069 GBP
View
B+
Retailer 5
-
£2,149 GBP
View
B+
Retailer 6
-
£2,175 GBP
View
B+
Retailer 7
-
£2,388 GBP
View
B+
Retailer 8
-
£2,525 GBP
View
B+
Retailer 9
-
£2,559 GBP
View
B
Retailer 10
-
£3,625 GBP
View
Most Expensive
C
NZ Jewellers
848a1b9b-f52f-4380-9d0e-bdc63a0db54d · Nov 3
£4,327 GBP
$5,791 USD
View
10 more retailers have this diamond
Prices start from £1,762 GBPSave up to £2,564 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
1.50ct Heart
£1,762 GBP