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Heart|Natural|IGI

1.51ct J SI1 Heart Natural Diamond

VG • J/SI1 • IGI 440097543

Shape and cutting style on the report: Heart brilliant

Certificate IGI 440097543

Diamond specifications and retailer prices

From £2,539 GBP
As of November 5, 2026
Save £2,489 GBP (49%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £5,028 GBP at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.51ct natural heart diamond

This 1.51ct natural heart sits in the one-and-a-half to two carat band, graded J colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI 440097543. Listed at 14 retailers as of November 5, 2026, with prices from £2,539 to £5,028, a £2,489 spread on the same certified stone. NZ Jewellers lists it at £5,028. 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

1.51
Carat
J
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishVery Good
SymmetryGood
FluorescenceNone
Crown angle35.4°
Pavilion angle40.3°
OriginNatural
Grading LabIGI
CertificateIGI 440097543
Dimensions7.04 × 8.01 × 4.73 mm
L/W Ratio1.14
Girdle conditionFaceted
Culet sizePointed
Top View
7.04 mm8.01 mm1.51 ctJ / SI1
OriginNatural
CutVery Good
PolishVery Good
SymmetryGood
FluorescenceNone
CertificateIGI 440097543
Side View
Table 58.0%Crown 35.4°Girdle: THN-THKPavilion 40.3°Culet: NoneDepth 59.1%

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 5
Current: £5,028 GBP|Low: £2,442 GBP|High: £5,028 GBP|Avg: £3,244 GBP
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 6, 2026
Retailer 3£2,610 GBP
Retailer 12£2,663 GBP
Retailer 4£2,761 GBP
Retailer 2£2,761 GBP
Retailer 9£2,886 GBP
Retailer 11£2,886 GBP
Retailer 5£2,977 GBP
Retailer 10£2,997 GBP
Retailer 8£3,330 GBP
Retailer 6£3,523 GBP
Retailer 7£4,826 GBP
NZ Jewellers£5,028 GBP

33 data points across 12 retailers

14 retailers£2,539 GBP to £5,028 GBP

B+
Cheapest Retailer
-
£2,539 GBP
B+
Retailer 2
-
£2,610 GBP
View
B+
Retailer 3
-
£2,663 GBP
View
Final sale: no returns
B+
Retailer 4
-
£2,761 GBP
View
B+
Retailer 5
-
£2,761 GBP
View
Retailer 6
-
£2,886 GBP
View
Price last confirmed 9 days ago
B+
Retailer 7
-
£2,886 GBP
View
B+
Retailer 8
-
£2,977 GBP
View
B
Retailer 9
-
£2,995 GBP
View
B
Retailer 10
-
£2,997 GBP
View
B
Retailer 11
-
£3,330 GBP
View
B
Retailer 12
-
£3,523 GBP
View
C
Retailer 13
-
£4,826 GBP
View
Most Expensive
C
NZ Jewellers
c893162e-1be4-4059-bbee-f28f78242cca · Nov 5
£5,028 GBP
$6,730 USD
View
13 more retailers have this diamond
Prices start from £2,539 GBPSave up to £2,489 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+
1.51ct Heart
£2,539 GBP