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Heart|Natural|IGI

1.00ct K SI1 Heart Natural Diamond

GD • K/SI1 • IGI 569314122

Shape and cutting style on the report: Heart brilliant

Certificate IGI 569314122

Diamond specifications and retailer prices

From £909 GBP
As of November 4, 2026
Save £1,485 GBP (62%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £2,394 GBP at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1ct natural heart diamond

This 1ct natural heart sits in the classic one-carat band, graded K colour (faint-tinted) and SI1 clarity (slightly-included), with a standard cut grade and certified by IGI 569314122. Listed at 12 retailers as of November 4, 2026, with prices from £909 to £2,394, a £1,485 spread on the same certified stone. NZ Jewellers lists it at £2,394. 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
K
Colour
SI1
Clarity
Good
Cut

Specifications

CutGood
PolishExcellent
SymmetryVery Good
FluorescenceFaint
Crown angle38.7°
Pavilion angle34.7°
OriginNatural
Grading LabIGI
CertificateIGI 569314122
Dimensions5.47 × 6.77 × 3.97 mm
L/W Ratio1.24
Girdle conditionFaceted
Culet sizePointed
Cert comments
Faint Brown
Top View
5.47 mm6.77 mm1.00 ctK / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateIGI 569314122
Side View
Table 56.0%Crown 38.7°Girdle: VTK-ETKPavilion 34.7°Culet: NoneDepth 58.6%

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: Nov 4
Current: £2,394 GBP|Low: £886 GBP|High: £2,394 GBP|Avg: £1,205 GBP|+6.1%
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
November 6, 2026
Retailer 13£909 GBP
Retailer 2£952 GBP
Retailer 9£982 GBP
Retailer 11£982 GBP
Retailer 10£1,027 GBP
Retailer 3£1,038 GBP
Retailer 12£1,065 GBP
Retailer 6£1,128 GBP
Retailer 4£1,133 GBP
Retailer 7£1,198 GBP
Retailer 5£1,259 GBP
Retailer 8£1,793 GBP
NZ Jewellers£2,394 GBP

31 data points across 13 retailers

12 retailers£909 GBP to £2,394 GBP

B+
Cheapest Retailer
-
£909 GBP
B+
Retailer 2
-
£952 GBP
View
B+
Retailer 3
-
£982 GBP
View
Retailer 4
-
£982 GBP
View
Price last confirmed 8 days ago
B+
Retailer 5
-
£1,027 GBP
View
B+
Retailer 6
-
£1,038 GBP
View
B+
Retailer 7
-
£1,065 GBP
View
B+
Retailer 8
-
£1,128 GBP
View
B+
Retailer 9
-
£1,133 GBP
View
B
Retailer 10
-
£1,198 GBP
View
B
Retailer 11
-
£1,793 GBP
View
Most Expensive
C
NZ Jewellers
d45b50d3-fb9b-4f1a-91c6-4344749663fc · Nov 5
£2,394 GBP
$3,204 USD
View
11 more retailers have this diamond
Prices start from £909 GBPSave up to £1,485 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
£909 GBP