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Heart|Natural|IGI

1.00ct L SI1 Heart Natural Diamond

VG • L/SI1 • IGI 689598916

Shape and cutting style on the report: Heart brilliant

Certificate IGI 689598916

Diamond specifications and retailer prices

From £782 GBP
As of November 4, 2026
Save £214 GBP (22%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £1,992 GBP at NZ Jewellers · As of September 30, 2026
View at NZ Jewellers

About this 1ct natural heart diamond

This 1ct natural heart sits in the classic one-carat band, graded L colour (faint-tinted) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI 689598916. Listed at 14 retailers as of November 4, 2026, with a 27% 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

1.00
Carat
L
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle33.1°
Pavilion angle39°
OriginNatural
Grading LabIGI
CertificateIGI 689598916
Dimensions5.79 × 6.98 × 4.15 mm
L/W Ratio1.21
Girdle conditionFaceted
Culet sizePointed
Top View
5.79 mm6.98 mm1.00 ctL / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI 689598916
Side View
Table 60.0%Crown 33.1°Girdle: THK-VTKPavilion 39°Culet: NoneDepth 59.5%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 4
Current: £997 GBP|Low: £575 GBP|High: £1,036 GBP|Avg: £864 GBP|+2.6%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 5, 2026
Retailer 9£575 GBP
Retailer 7£782 GBP
Retailer 2£817 GBP
Retailer 3£847 GBP
Retailer 4£874 GBP
Retailer 6£917 GBP
Retailer 8£919 GBP
Retailer 1£997 GBP
Retailer 5£1,036 GBP

12 data points across 9 retailers

14 retailers£782 GBP to £997 GBP

B+
Cheapest Retailer
-
£782 GBP
Retailer 2
-
£817 GBP
View
Price last confirmed 8 days ago
Retailer 3
-
£817 GBP
View
Price last confirmed 36 days ago
B+
Retailer 4
-
£817 GBP
View
B+
Retailer 5
-
£847 GBP
View
Retailer 6
-
£848 GBP
View
Price last confirmed 36 days ago
B+
Retailer 7
-
£874 GBP
View
B+
Retailer 8
-
£917 GBP
View
B+
Retailer 9
-
£919 GBP
View
Retailer 10
-
£942 GBP
View
Price last confirmed 60 days ago
Retailer 11
-
£942 GBP
View
Price last confirmed 38 days ago
B
Retailer 12
-
£942 GBP
View
B
Retailer 13
-
£997 GBP
View
Most Expensive
NZ Jewellers
24b21f32-73a7-4414-94de-f277bd3c6cf3 · Sep 30
£1,992 GBP
$2,666 USD
View
Price last confirmed 37 days ago
13 more retailers have this diamond
Prices start from £782 GBPSave up to £214 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+
1.00ct Heart
£782 GBP