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Heart|Natural|IGI

1.30ct K SI1 Heart Natural Diamond

VG • K/SI1 • IGI 734534568

Shape and cutting style on the report: Heart brilliant

Certificate IGI 734534568

Diamond specifications and retailer prices

From £940 GBP
As of November 2, 2026
Save £1,412 GBP (60%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: £2,352 GBP at NZ Jewellers · As of November 3, 2026
View at NZ Jewellers

About this 1.3ct natural heart diamond

This 1.3ct natural heart sits in the one-and-a-quarter to one-and-a-half carat band, graded K colour (faint-tinted) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI 734534568. Listed at 6 retailers as of November 2, 2026, with prices from £940 to £2,352, a £1,412 spread on the same certified stone. NZ Jewellers lists it at £2,352. 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

1.30
Carat
K
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle33.1°
Pavilion angle40.8°
OriginNatural
Grading LabIGI
CertificateIGI 734534568
Dimensions6.77 × 7.56 × 4.48 mm
L/W Ratio1.12
Girdle conditionFaceted
Top View
6.77 mm7.56 mm1.30 ctK / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI 734534568
Side View
Table 57.0%Crown 33.1°Girdle: STK-THKPavilion 40.8°Culet: NoneDepth 59.3%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 2
Current: £2,352 GBP|Low: £940 GBP|High: £2,388 GBP|Avg: £1,304 GBP|-1.5%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 4, 2026
Retailer 3£940 GBP
Retailer 2£964 GBP
Retailer 6£964 GBP
Retailer 5£1,001 GBP
Retailer 7£1,042 GBP
Retailer 8£1,152 GBP
Retailer 4£1,765 GBP
NZ Jewellers£2,352 GBP

31 data points across 8 retailers

6 retailers£940 GBP to £2,352 GBP

A
Cheapest Retailer
-
£940 GBP
A
Retailer 2
-
£964 GBP
View
A
Retailer 3
-
£964 GBP
View
A
Retailer 4
-
£1,001 GBP
View
B+
Retailer 5
-
£1,765 GBP
View
Most Expensive
B
NZ Jewellers
c038d9e1-dbc3-4d73-9903-69f170676316 · Nov 3
£2,352 GBP
$3,148 USD
View
5 more retailers have this diamond
Prices start from £940 GBPSave up to £1,412 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
1.30ct Heart
£940 GBP