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Heart|Natural|IGI

1.51ct H IF Heart Natural Diamond

VG • H/IF • IGI 635461868

Shape and cutting style on the report: Heart brilliant

Certificate IGI 635461868

Diamond specifications and retailer prices

From £5,030 GBP
$6,739 USD
As of October 30, 2026
Save £3,080 GBP (38%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: £9,732 GBP at NZ Jewellers · As of September 28, 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 IF clarity (flawless or internally-flawless), with a very-good cut grade and certified by IGI 635461868. Listed at 16 retailers as of October 30, 2026, with a 61% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
IF
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.5°
Pavilion angle39.8°
OriginNatural
Grading LabIGI
CertificateIGI 635461868
Dimensions6.78 × 7.89 × 4.76 mm
L/W Ratio1.16
Girdle conditionFaceted
Culet sizePointed
Top View
6.78 mm7.89 mm1.51 ctH / IF
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 635461868
Side View
Table 59.0%Crown 36.5°Girdle: MED-STKPavilion 39.8°Culet: NoneDepth 60.3%

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: Oct 30
Current: £8,110 GBP|Low: £4,924 GBP|High: £8,207 GBP|Avg: £6,113 GBP|-0.1%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 1, 2026
Retailer 8£5,030 GBP
Retailer 6£5,366 GBP
Retailer 4£5,371 GBP
Retailer 5£5,371 GBP
Retailer 2£5,514 GBP
Retailer 7£5,942 GBP
Retailer 3£7,149 GBP
Retailer 9£7,358 GBP
Retailer 1£8,110 GBP

40 data points across 9 retailers

16 retailers£5,030 GBP to £8,110 GBP

B+
Cheapest Retailer
-
£5,030 GBP
$6,739 USD
B+
Retailer 2
-
£5,366 GBP
$7,190 USD
View
B+
Retailer 3
-
£5,371 GBP
$7,196 USD
View
Final sale: no returns
Retailer 4
-
£5,371 GBP
$7,197 USD
View
Price last confirmed 16 days ago
B+
Retailer 5
-
£5,514 GBP
View
Retailer 6
-
£5,819 GBP
$7,797 USD
View
Price last confirmed 34 days ago
Retailer 7
-
£5,819 GBP
$7,797 USD
View
Price last confirmed 14 days ago
Retailer 8
-
£5,909 GBP
$7,917 USD
View
Price last confirmed 16 days ago
B+
Retailer 9
-
£5,942 GBP
$7,961 USD
View
Retailer 10
-
£6,714 GBP
$8,996 USD
View
Price last confirmed 47 days ago
Retailer 11
-
£6,714 GBP
$8,996 USD
View
Price last confirmed 14 days ago
Retailer 12
-
£6,714 GBP
$8,996 USD
View
Price last confirmed 34 days ago
B
Retailer 13
-
£7,149 GBP
ZAR 154,756 ZAR
View
B
Retailer 14
-
£8,110 GBP
View
Retailer 15
-
£9,732 GBP
$13,040 USD
View
Price last confirmed 15 days ago
Most Expensive
NZ Jewellers
cbe4308c-a3e2-4ee2-abe7-1ba03337595a · Sep 28
£9,732 GBP
$13,040 USD
View
Price last confirmed 34 days ago
15 more retailers have this diamond
Prices start from £5,030 GBPSave up to £3,080 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
£5,030 GBP