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Heart|Natural|IGI

0.73ct J SI1 Heart Natural Diamond

VG • J/SI1 • IGI 815656656

Shape and cutting style on the report: Heart brilliant

Certificate IGI 815656656

Diamond specifications and retailer prices

From £373 GBP
As of November 3, 2026
Save £1,213 GBP (76%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: £1,585 GBP at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 0.73ct natural heart diamond

This 0.73ct natural heart sits in the half to three-quarter carat band, graded J colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI 815656656. Listed at 17 retailers as of November 3, 2026, with prices from £373 to £1,585, a £1,213 spread on the same certified stone. NZ Jewellers lists it at £1,585. 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

0.73
Carat
J
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle40.9°
Pavilion angle37.8°
OriginNatural
Grading LabIGI
CertificateIGI 815656656
Dimensions5.46 × 6.26 × 3.67 mm
L/W Ratio1.15
Girdle conditionFaceted
Top View
5.46 mm6.26 mm0.73 ctJ / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateIGI 815656656
Side View
Table 60.0%Crown 40.9°Girdle: MED-THKPavilion 37.8°Culet: NoneDepth 58.6%

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 3
Current: £1,585 GBP|Low: £373 GBP|High: £1,609 GBP|Avg: £721 GBP|-1.4%
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
Retailer 14
Retailer 15
Retailer 16
Retailer 17
November 6, 2026
Retailer 3£373 GBP
Retailer 14£496 GBP
Retailer 15£506 GBP
Retailer 8£508 GBP
Retailer 17£526 GBP
Retailer 4£561 GBP
Retailer 12£576 GBP
Retailer 13£583 GBP
Retailer 6£602 GBP
Retailer 10£634 GBP
Retailer 7£643 GBP
Retailer 11£675 GBP
Retailer 16£756 GBP
Retailer 2£757 GBP
Retailer 9£1,180 GBP
Retailer 5£1,455 GBP
NZ Jewellers£1,585 GBP

19 data points across 17 retailers

17 retailers£373 GBP to £1,585 GBP

A
Cheapest Retailer
-
£373 GBP
A
Retailer 2
-
£496 GBP
View
A
Retailer 3
-
£506 GBP
View
Retailer 4
-
£508 GBP
View
Price last confirmed 9 days ago
B+
Retailer 5
-
£526 GBP
View
B+
Retailer 6
-
£561 GBP
View
B+
Retailer 7
-
£576 GBP
View
B+
Retailer 8
-
£583 GBP
View
B+
Retailer 9
-
£602 GBP
View
B+
Retailer 10
-
£634 GBP
View
B+
Retailer 11
-
£643 GBP
View
B+
Retailer 12
-
£675 GBP
View
B
Retailer 13
-
£756 GBP
View
B
Retailer 14
-
£757 GBP
View
Retailer 15
-
£1,180 GBP
View
Price last confirmed 13 days ago
C
Retailer 16
-
£1,455 GBP
View
Most Expensive
B
NZ Jewellers
b2af5e46-4b90-4f88-8be0-cf11bee2f9e0 · Nov 5
£1,585 GBP
$2,122 USD
View
16 more retailers have this diamond
Prices start from £373 GBPSave up to £1,213 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
0.73ct Heart
£373 GBP