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Heart|Natural|IGI

1.51ct H SI2 Heart Natural Diamond

VG • H/SI2 • IGI 803629080

Shape and cutting style on the report: Heart brilliant

Certificate IGI 803629080

Diamond specifications and retailer prices

From £1,969 GBP
$2,642 USD
As of October 31, 2026
Save £2,626 GBP (57%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £4,595 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 H colour (near-colourless) and SI2 clarity (slightly-included), with a very-good cut grade and certified by IGI 803629080. Listed at 14 retailers as of October 30, 2026, with prices from £1,969 to £4,595, a £2,626 spread on the same certified stone. NZ Jewellers lists it at £4,595. 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
H
Colour
SI2
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37°
Pavilion angle37.8°
OriginNatural
Grading LabIGI
CertificateIGI 803629080
Dimensions7.26 × 8.00 × 4.49 mm
L/W Ratio1.10
Girdle conditionFaceted
Top View
7.26 mm8.00 mm1.51 ctH / SI2
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 803629080
Side View
Table 59.0%Crown 37°Girdle: STK-THKPavilion 37.8°Culet: NoneDepth 56.1%

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: £4,595 GBP|Low: £1,916 GBP|High: £4,595 GBP|Avg: £2,623 GBP|+16.4%
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 11£1,969 GBP
Retailer 3£2,028 GBP
Retailer 12£2,100 GBP
Retailer 10£2,114 GBP
Retailer 6£2,129 GBP
Retailer 4£2,265 GBP
Retailer 5£2,265 GBP
Retailer 2£2,283 GBP
Retailer 8£2,304 GBP
Retailer 13£2,536 GBP
Retailer 7£2,573 GBP
Retailer 9£3,676 GBP
NZ Jewellers£4,595 GBP

44 data points across 13 retailers

14 retailers£1,969 GBP to £4,595 GBP

A
Cheapest Retailer
-
£1,969 GBP
$2,642 USD
A
Retailer 2
-
£2,028 GBP
$2,722 USD
View
Final sale: no returns
A
Retailer 3
-
£2,100 GBP
$2,818 USD
View
A
Retailer 4
-
£2,114 GBP
$2,837 USD
View
A
Retailer 5
-
£2,129 GBP
View
B+
Retailer 6
-
£2,265 GBP
$3,040 USD
View
B+
Retailer 7
-
£2,265 GBP
$3,040 USD
View
Retailer 8
-
£2,265 GBP
$3,040 USD
View
Price last confirmed 17 days ago
A
Retailer 9
-
£2,283 GBP
$3,063 USD
View
B+
Retailer 10
-
£2,304 GBP
$3,092 USD
View
A
Retailer 11
-
£2,536 GBP
$3,403 USD
View
B+
Retailer 12
-
£2,573 GBP
€3,288 EUR
View
B+
Retailer 13
-
£3,676 GBP
View
Most Expensive
B
NZ Jewellers
6dc05a17-ff07-41b6-8585-84b4a869d57e · Oct 30
£4,595 GBP
$6,166 USD
View
13 more retailers have this diamond
Prices start from £1,969 GBPSave up to £2,626 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
£1,969 GBP