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Heart|Natural|IGI

1.51ct J SI2 Heart Natural Diamond

VG • J/SI2 • IGI 737595032

Shape and cutting style on the report: Heart brilliant

Certificate IGI 737595032

Diamond specifications and retailer prices

From £1,767 GBP
$2,368 USD
As of October 31, 2026
Save £2,358 GBP (57%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £4,125 GBP at NZ Jewellers · As of October 30, 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 SI2 clarity (slightly-included), with a very-good cut grade and certified by IGI 737595032. Listed at 12 retailers as of October 30, 2026, with prices from £1,767 to £4,125, a £2,358 spread on the same certified stone. NZ Jewellers lists it at £4,125. 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
SI2
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle35.6°
Pavilion angle42.4°
OriginNatural
Grading LabIGI
CertificateIGI 737595032
Dimensions6.83 × 8.02 × 4.89 mm
L/W Ratio1.17
Girdle conditionFaceted
Culet sizePointed
Top View
6.83 mm8.02 mm1.51 ctJ / SI2
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateIGI 737595032
Side View
Table 58.0%Crown 35.6°Girdle: STK-THKPavilion 42.4°Culet: NoneDepth 61.0%

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: Oct 31
Current: £4,125 GBP|Low: £1,720 GBP|High: £4,252 GBP|Avg: £2,359 GBP|-3.0%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
November 2, 2026
Retailer 9£1,767 GBP
Retailer 12£1,821 GBP
Retailer 8£1,917 GBP
Retailer 2£1,951 GBP
Retailer 4£2,034 GBP
Retailer 13£2,034 GBP
Retailer 6£2,078 GBP
Retailer 10£2,079 GBP
Retailer 3£2,112 GBP
Retailer 11£2,276 GBP
Retailer 5£2,420 GBP
Retailer 7£3,457 GBP
NZ Jewellers£4,125 GBP

46 data points across 13 retailers

12 retailers£1,767 GBP to £4,125 GBP

A
Cheapest Retailer
-
£1,767 GBP
$2,368 USD
A
Retailer 2
-
£1,821 GBP
$2,440 USD
View
Final sale: no returns
B+
Retailer 3
-
£1,917 GBP
$2,569 USD
View
A
Retailer 4
-
£1,951 GBP
View
B+
Retailer 5
-
£2,034 GBP
$2,725 USD
View
B+
Retailer 6
-
£2,034 GBP
$2,725 USD
View
B+
Retailer 7
-
£2,078 GBP
$2,785 USD
View
B+
Retailer 8
-
£2,079 GBP
$2,785 USD
View
B+
Retailer 9
-
£2,112 GBP
$2,830 USD
View
B+
Retailer 10
-
£2,276 GBP
$3,050 USD
View
B
Retailer 11
-
£3,457 GBP
View
Most Expensive
B
NZ Jewellers
c0fb1cf0-8e2f-4bab-8937-feac363ca609 · Oct 30
£4,125 GBP
$5,527 USD
View
11 more retailers have this diamond
Prices start from £1,767 GBPSave up to £2,358 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 Heart
£1,767 GBP