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Heart|Natural|IGI

1.51ct G SI2 Heart Natural Diamond

VG • G/SI2 • IGI 743535355

Shape and cutting style on the report: Heart brilliant

Certificate IGI 743535355

Diamond specifications and retailer prices

From £1,976 GBP
$2,652 USD
As of November 1, 2026
Save £2,638 GBP (57%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £4,614 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 G colour (near-colourless) and SI2 clarity (slightly-included), with a very-good cut grade and certified by IGI 743535355. Listed at 12 retailers as of October 30, 2026, with prices from £1,976 to £4,614, a £2,638 spread on the same certified stone. NZ Jewellers lists it at £4,614. 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
G
Colour
SI2
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishVery Good
SymmetryExcellent
FluorescenceNone
Crown angle36.9°
Pavilion angle38.5°
OriginNatural
Grading LabIGI
CertificateIGI 743535355
Dimensions6.85 × 7.85 × 4.68 mm
L/W Ratio1.15
Girdle conditionFaceted
Culet sizePointed
Top View
6.85 mm7.85 mm1.51 ctG / SI2
OriginNatural
CutVery Good
PolishVery Good
SymmetryExcellent
FluorescenceNone
CertificateIGI 743535355
Side View
Table 57.0%Crown 36.9°Girdle: STK-THKPavilion 38.5°Culet: NoneDepth 59.6%

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 1
Current: £4,614 GBP|Low: £1,867 GBP|High: £4,614 GBP|Avg: £2,528 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
Retailer 13
Retailer 14
Retailer 15
November 2, 2026
Retailer 5£1,976 GBP
Retailer 10£2,037 GBP
Retailer 13£2,042 GBP
Retailer 11£2,110 GBP
Retailer 2£2,138 GBP
Retailer 12£2,207 GBP
Retailer 14£2,207 GBP
Retailer 9£2,292 GBP
Retailer 4£2,313 GBP
Retailer 6£2,319 GBP
Retailer 15£2,547 GBP
Retailer 3£2,626 GBP
Retailer 7£2,696 GBP
Retailer 8£3,691 GBP
NZ Jewellers£4,614 GBP

35 data points across 15 retailers

12 retailers£1,976 GBP to £4,614 GBP

A
Cheapest Retailer
-
£1,976 GBP
$2,652 USD
A
Retailer 2
-
£2,037 GBP
$2,734 USD
View
Final sale: no returns
A
Retailer 3
-
£2,042 GBP
$2,740 USD
View
A
Retailer 4
-
£2,110 GBP
$2,832 USD
View
A
Retailer 5
-
£2,138 GBP
View
B+
Retailer 6
-
£2,207 GBP
$2,962 USD
View
B+
Retailer 7
-
£2,207 GBP
$2,962 USD
View
B+
Retailer 8
-
£2,292 GBP
$3,076 USD
View
B+
Retailer 9
-
£2,313 GBP
$3,104 USD
View
B+
Retailer 10
-
£2,547 GBP
$3,418 USD
View
B+
Retailer 11
-
£3,691 GBP
View
Most Expensive
B
NZ Jewellers
4fd0a448-43df-424a-8443-5fa286347a15 · Oct 30
£4,614 GBP
$6,192 USD
View
11 more retailers have this diamond
Prices start from £1,976 GBPSave up to £2,638 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
£1,976 GBP