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Heart|Natural|IGI

1.51ct J SI1 Heart Natural Diamond

VG • J/SI1 • IGI 749558441

Shape and cutting style on the report: Heart brilliant

Certificate IGI 749558441

Diamond specifications and retailer prices

From £2,611 GBP
As of November 6, 2026
Save £2,560 GBP (50%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: £5,171 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 749558441. Listed at 17 retailers as of November 5, 2026, with prices from £2,611 to £5,171, a £2,560 spread on the same certified stone. NZ Jewellers lists it at £5,171. 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
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34°
Pavilion angle38.9°
OriginNatural
Grading LabIGI
CertificateIGI 749558441
Dimensions7.12 × 7.87 × 4.47 mm
L/W Ratio1.11
Girdle conditionFaceted
Culet sizePointed
Top View
7.12 mm7.87 mm1.51 ctJ / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 749558441
Side View
Table 60.0%Crown 34°Girdle: MED-THKPavilion 38.9°Culet: NoneDepth 56.8%

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 6
Current: £5,171 GBP|Low: £2,739 GBP|High: £5,171 GBP|Avg: £3,577 GBP
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 6, 2026
Retailer 8£2,739 GBP
Retailer 2£2,840 GBP
Retailer 9£2,968 GBP
Retailer 4£3,062 GBP
Retailer 3£3,352 GBP
Retailer 10£3,424 GBP
Retailer 7£3,520 GBP
Retailer 5£3,622 GBP
Retailer 6£4,963 GBP
NZ Jewellers£5,171 GBP

30 data points across 10 retailers

17 retailers£2,611 GBP to £5,171 GBP

B+
Cheapest Retailer
-
£2,611 GBP
B+
Retailer 2
-
£2,670 GBP
View
B+
Retailer 3
-
£2,739 GBP
View
Final sale: no returns
B+
Retailer 4
-
£2,832 GBP
View
B+
Retailer 5
-
£2,840 GBP
View
B+
Retailer 6
-
£2,922 GBP
View
B+
Retailer 7
-
£2,968 GBP
View
B+
Retailer 8
-
£2,968 GBP
View
Retailer 9
-
£2,968 GBP
View
Price last confirmed 9 days ago
B+
Retailer 10
-
£3,062 GBP
View
B
Retailer 11
-
£3,077 GBP
View
B
Retailer 12
-
£3,352 GBP
View
B
Retailer 13
-
£3,424 GBP
View
B
Retailer 14
-
£3,622 GBP
View
B
Retailer 15
-
£4,407 GBP
View
B
Retailer 16
-
£4,963 GBP
View
Most Expensive
C
NZ Jewellers
0ada1b4f-21ab-4fcf-8be3-23a729e1c4a5 · Nov 5
£5,171 GBP
$6,921 USD
View
16 more retailers have this diamond
Prices start from £2,611 GBPSave up to £2,560 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
£2,611 GBP