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Heart|Natural|IGI

1.23ct K SI2 Heart Natural Diamond

VG • K/SI2 • IGI 762534888

Shape and cutting style on the report: Heart brilliant

Certificate IGI 762534888

Diamond specifications and retailer prices

From £976 GBP
As of November 6, 2026
Save £891 GBP (48%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £2,685 GBP at NZ Jewellers · As of September 30, 2026
View at NZ Jewellers

About this 1.23ct natural heart diamond

This 1.23ct natural heart sits in the classic one-carat band, graded K colour (faint-tinted) and SI2 clarity (slightly-included), with a very-good cut grade and certified by IGI 762534888. Listed at 10 retailers as of November 4, 2026, with a 91% 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

1.23
Carat
K
Colour
SI2
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle35.5°
Pavilion angle38.8°
OriginNatural
Grading LabIGI
CertificateIGI 762534888
Dimensions6.38 × 7.44 × 4.39 mm
L/W Ratio1.17
Girdle conditionFaceted
Culet sizePointed
Top View
6.38 mm7.44 mm1.23 ctK / SI2
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateIGI 762534888
Side View
Table 61.0%Crown 35.5°Girdle: STK-THKPavilion 38.8°Culet: NoneDepth 59.0%

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 6
Current: £976 GBP|Low: £976 GBP|High: £1,951 GBP|Avg: £1,224 GBP|-4.3%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 6, 2026
Retailer 1£976 GBP
Retailer 8£979 GBP
Retailer 6£1,101 GBP
Retailer 5£1,114 GBP
Retailer 4£1,121 GBP
Retailer 2£1,154 GBP
Retailer 7£1,310 GBP
Retailer 3£1,867 GBP

12 data points across 8 retailers

10 retailers£976 GBP to £1,867 GBP

A
Cheapest Retailer
-
£976 GBP
Retailer 2
-
£1,100 GBP
View
Price last confirmed 37 days ago
B+
Retailer 3
-
£1,114 GBP
View
B+
Retailer 4
-
£1,121 GBP
View
Retailer 5
-
£1,152 GBP
View
Price last confirmed 37 days ago
B+
Retailer 6
-
£1,154 GBP
View
Retailer 7
-
£1,270 GBP
View
Price last confirmed 62 days ago
Retailer 8
-
£1,270 GBP
View
Price last confirmed 39 days ago
B
Retailer 9
-
£1,867 GBP
View
Most Expensive
NZ Jewellers
e59dba1f-eac7-4779-a68e-5f506d9aeab4 · Sep 30
£2,685 GBP
$3,594 USD
View
Price last confirmed 37 days ago
9 more retailers have this diamond
Prices start from £976 GBPSave up to £891 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
1.23ct Heart
£976 GBP