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Heart|Natural|IGI

0.85ct I SI1 Heart Natural Diamond

VG • I/SI1 • IGI 734506963

Shape and cutting style on the report: Heart brilliant

Certificate IGI 734506963

Diamond specifications and retailer prices

From £576 GBP
$772 USD
As of November 2, 2026
Save £1,245 GBP (68%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £1,821 GBP at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

About this 0.85ct natural heart diamond

This 0.85ct natural heart sits in the just-under-one-carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI 734506963. Listed at 12 retailers as of October 30, 2026, with prices from £576 to £1,821, a £1,245 spread on the same certified stone. NZ Jewellers lists it at £1,821. 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

0.85
Carat
I
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle41.1°
Pavilion angle36.9°
OriginNatural
Grading LabIGI
CertificateIGI 734506963
Dimensions5.77 × 6.41 × 3.82 mm
L/W Ratio1.11
Girdle conditionFaceted
Culet sizePointed
Top View
5.77 mm6.41 mm0.85 ctI / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateIGI 734506963
Side View
Table 61.0%Crown 41.1°Girdle: STK-VTKPavilion 36.9°Culet: NoneDepth 59.6%

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 2
Current: £1,821 GBP|Low: £576 GBP|High: £1,866 GBP|Avg: £819 GBP|-2.4%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 2, 2026
Retailer 4£576 GBP
Retailer 6£580 GBP
Retailer 10£581 GBP
Retailer 7£586 GBP
Retailer 11£604 GBP
Retailer 5£640 GBP
Retailer 2£820 GBP
Retailer 8£859 GBP
Retailer 3£869 GBP
Retailer 9£899 GBP
Retailer 12£1,073 GBP
NZ Jewellers£1,821 GBP

27 data points across 12 retailers

12 retailers£576 GBP to £1,821 GBP

A
Cheapest Retailer
-
£576 GBP
$772 USD
Final sale: no returns
A
Retailer 2
-
£580 GBP
$777 USD
View
A
Retailer 3
-
£581 GBP
$779 USD
View
A
Retailer 4
-
£586 GBP
$785 USD
View
A
Retailer 5
-
£604 GBP
$809 USD
View
A
Retailer 6
-
£640 GBP
View
B+
Retailer 7
-
£820 GBP
€1,047 EUR
View
B+
Retailer 8
-
£859 GBP
ZAR 18,591 ZAR
View
B+
Retailer 9
-
£869 GBP
$1,165 USD
View
B+
Retailer 10
-
£899 GBP
$1,205 USD
View
B+
Retailer 11
-
£1,073 GBP
View
Most Expensive
B
NZ Jewellers
c51bc1c4-ea6e-4629-8009-bd954770d77c · Oct 30
£1,821 GBP
$2,440 USD
View
11 more retailers have this diamond
Prices start from £576 GBPSave up to £1,245 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
0.85ct Heart
£576 GBP