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Heart|Natural|IGI

1.03ct I VS1 Heart Natural Diamond

VG • I/VS1 • IGI 789604444

Shape and cutting style on the report: Heart brilliant

Certificate IGI 789604444

Diamond specifications and retailer prices

From £1,135 GBP
As of November 4, 2026
Save £1,974 GBP (64%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £3,109 GBP at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.03ct natural heart diamond

This 1.03ct natural heart sits in the classic one-carat band, graded I colour (near-colourless) and VS1 clarity (very-slightly-included), with a very-good cut grade and certified by IGI 789604444. Listed at 11 retailers as of November 4, 2026, with prices from £1,135 to £3,109, a £1,974 spread on the same certified stone. NZ Jewellers lists it at £3,109. 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

1.03
Carat
I
Colour
VS1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle39.3°
Pavilion angle40.9°
OriginNatural
Grading LabIGI
CertificateIGI 789604444
Dimensions5.71 × 6.87 × 4.37 mm
L/W Ratio1.20
Girdle conditionFaceted
Top View
5.71 mm6.87 mm1.03 ctI / VS1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 789604444
Side View
Table 60.0%Crown 39.3°Girdle: Slightly ThickPavilion 40.9°Culet: NoneDepth 63.6%

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 4
Current: £3,109 GBP|Low: £1,129 GBP|High: £3,109 GBP|Avg: £1,556 GBP
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 5, 2026
Retailer 6£1,135 GBP
Retailer 9£1,176 GBP
Retailer 2£1,210 GBP
Retailer 4£1,269 GBP
Retailer 7£1,363 GBP
Retailer 3£1,555 GBP
Retailer 8£1,970 GBP
Retailer 5£2,227 GBP
NZ Jewellers£3,109 GBP

29 data points across 9 retailers

11 retailers£1,135 GBP to £3,109 GBP

A
Cheapest Retailer
-
£1,135 GBP
A
Retailer 2
-
£1,176 GBP
View
Final sale: no returns
A
Retailer 3
-
£1,210 GBP
View
A
Retailer 4
-
£1,269 GBP
View
A
Retailer 5
-
£1,363 GBP
View
A
Retailer 6
-
£1,374 GBP
View
A
Retailer 7
-
£1,427 GBP
View
A
Retailer 8
-
£1,555 GBP
View
B+
Retailer 9
-
£1,970 GBP
View
B
Retailer 10
-
£2,227 GBP
View
Most Expensive
B
NZ Jewellers
936a8f12-d12b-45fb-ad13-20a54c52905a · Nov 5
£3,109 GBP
$4,184 USD
View
10 more retailers have this diamond
Prices start from £1,135 GBPSave up to £1,974 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
1.03ct Heart
£1,135 GBP