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Heart|Lab Grown|IGI

0.71ct E SI1 Heart Lab Grown Diamond

ID • E/SI1 • IGI LG803660474

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG803660474

Diamond specifications and retailer prices

From £116 GBP
$155 USD
As of October 23, 2026
Save £557 GBP (83%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £673 GBP at MOH London · As of October 25, 2026
View at MOH London

About this 0.71ct lab-grown heart diamond

This 0.71ct lab-grown heart sits in the half to three-quarter carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG803660474 or 803660474. Listed at 13 retailers as of October 23, 2026, with prices from £116 to £673, a £557 spread on the same certified stone. MOH London lists it at £673. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

0.71
Carat
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle33.8°
Pavilion angle41.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG803660474
Dimensions6.31 × 5.46 × 3.69 mm
L/W Ratio1.16
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
6.31 mm5.46 mm0.71 ctE / SI1
OriginLab Grown
CutIdeal
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateIGI LG803660474
Side View
Table 66.0%Crown 33.8°Girdle: MED-THKPavilion 41.2°Culet: NoneDepth 58.5%

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: Oct 23
Current: £673 GBP|Low: £102 GBP|High: £737 GBP|Avg: £301 GBP|-8.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
October 28, 2026
Retailer 11£116 GBP
Retailer 12£129 GBP
Retailer 7£134 GBP
Retailer 13£144 GBP
Retailer 8£163 GBP
Retailer 6£250 GBP
Retailer 3£264 GBP
Retailer 4£318 GBP
Retailer 10£373 GBP
Retailer 5£390 GBP
Retailer 2£393 GBP
Retailer 9£463 GBP
MOH London£673 GBP

43 data points across 13 retailers

13 retailers£116 GBP to £673 GBP

A
Cheapest Retailer
-
£116 GBP
$155 USD
A
Retailer 2
-
£129 GBP
$172 USD
View
Final sale: no returns
A
Retailer 3
-
£134 GBP
$179 USD
View
A
Retailer 4
-
£144 GBP
$192 USD
View
A
Retailer 5
-
£163 GBP
HK$1,700 HKD
View
B+
Retailer 6
-
£250 GBP
View
B+
Retailer 7
-
£264 GBP
$351 USD
View
B+
Retailer 8
-
£318 GBP
$423 USD
View
B
Retailer 9
-
£373 GBP
$497 USD
View
B
Retailer 10
-
£390 GBP
$520 USD
View
B
Retailer 11
-
£393 GBP
SGD 707 SGD
View
B
Retailer 12
-
£463 GBP
$616 USD
View
Most Expensive
B
MOH London
LG803660474 · Oct 25
£673 GBP
View
12 more retailers have this diamond
Prices start from £116 GBPSave up to £557 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
0.71ct Heart
£116 GBP