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Heart|Natural|IGI

1.33ct I SI1 Heart Natural Diamond

VG • I/SI1 • IGI 762534876

Shape and cutting style on the report: Heart brilliant

Certificate IGI 762534876

Diamond specifications and retailer prices

From £1,728 GBP
As of November 6, 2026
Save £1,643 GBP (49%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: £4,158 GBP at NZ Jewellers · As of September 29, 2026
View at NZ Jewellers

About this 1.33ct natural heart diamond

This 1.33ct natural heart sits in the one-and-a-quarter to one-and-a-half carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI 762534876. Listed at 17 retailers as of November 4, 2026, with a 95% 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

1.33
Carat
I
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle36.1°
Pavilion angle38.9°
OriginNatural
Grading LabIGI
CertificateIGI 762534876
Dimensions6.99 × 7.74 × 4.26 mm
L/W Ratio1.11
Girdle conditionFaceted
Culet sizePointed
Top View
6.99 mm7.74 mm1.33 ctI / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateIGI 762534876
Side View
Table 59.0%Crown 36.1°Girdle: STK-THKPavilion 38.9°Culet: NoneDepth 55.0%

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 6
Current: £1,872 GBP|Low: £1,728 GBP|High: £3,526 GBP|Avg: £2,253 GBP|-4.7%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 6, 2026
Retailer 12£1,728 GBP
Retailer 3£1,780 GBP
Retailer 1£1,872 GBP
Retailer 11£1,873 GBP
Retailer 9£1,909 GBP
Retailer 4£1,989 GBP
Retailer 2£2,031 GBP
Retailer 10£2,034 GBP
Retailer 6£2,078 GBP
Retailer 7£2,355 GBP
Retailer 5£2,396 GBP
Retailer 8£3,371 GBP

33 data points across 12 retailers

17 retailers£1,728 GBP to £3,371 GBP

A
Cheapest Retailer
-
£1,728 GBP
A
Retailer 2
-
£1,780 GBP
View
Final sale: no returns
A
Retailer 3
-
£1,872 GBP
View
A
Retailer 4
-
£1,873 GBP
View
B+
Retailer 5
-
£1,909 GBP
View
Retailer 6
-
£1,989 GBP
View
Price last confirmed 37 days ago
Retailer 7
-
£1,989 GBP
View
Price last confirmed 9 days ago
Retailer 8
-
£1,989 GBP
View
Price last confirmed 22 days ago
B+
Retailer 9
-
£2,031 GBP
View
B+
Retailer 10
-
£2,034 GBP
View
Retailer 11
-
£2,065 GBP
View
Price last confirmed 37 days ago
A
Retailer 12
-
£2,078 GBP
View
Retailer 13
-
£2,294 GBP
View
Price last confirmed 39 days ago
B+
Retailer 14
-
£2,355 GBP
View
B+
Retailer 15
-
£2,396 GBP
View
B
Retailer 16
-
£3,371 GBP
View
Most Expensive
NZ Jewellers
bdbdf415-3934-43db-9c57-9d3f6d373dc2 · Sep 29
£4,158 GBP
$5,565 USD
View
Price last confirmed 38 days ago
16 more retailers have this diamond
Prices start from £1,728 GBPSave up to £1,643 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
1.33ct Heart
£1,728 GBP