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Heart|Lab Grown|IGI

1.34ct E SI1 Heart Lab Grown Diamond

ID • E/SI1 • IGI LG706577738

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG706577738

Diamond specifications and retailer prices

From £131 GBP
As of November 6, 2026
Save £629 GBP (83%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £761 GBP at MOH London · As of November 5, 2026
View at MOH London

About this 1.34ct lab-grown heart diamond

This 1.34ct lab-grown heart sits in the one-and-a-quarter to one-and-a-half carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG706577738 or 706577738. Listed at 12 retailers as of November 5, 2026, with prices from £131 to £761, a £629 spread on the same certified stone. MOH London lists it at £761. 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

1.34
Carat
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.5°
Pavilion angle37.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG706577738
Dimensions6.79 × 7.64 × 4.38 mm
L/W Ratio1.13
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
6.79 mm7.64 mm1.34 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG706577738
Side View
Table 61.0%Crown 33.5°Girdle: MED-STKPavilion 37.9°Culet: NoneDepth 57.3%

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: £761 GBP|Low: £131 GBP|High: £1,173 GBP|Avg: £407 GBP|-0.2%
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
Retailer 14
Retailer 15
November 6, 2026
Retailer 4£131 GBP
Retailer 3£152 GBP
Retailer 10£164 GBP
Retailer 14£182 GBP
Retailer 2£210 GBP
Retailer 8£290 GBP
Retailer 15£290 GBP
Retailer 5£319 GBP
Retailer 11£353 GBP
Retailer 13£353 GBP
Retailer 12£525 GBP
Retailer 9£554 GBP
Retailer 6£747 GBP
MOH London£761 GBP
Retailer 7£1,173 GBP

11 data points across 15 retailers

12 retailers£131 GBP to £761 GBP

A
Cheapest Retailer
-
£131 GBP
A
Retailer 2
-
£152 GBP
View
A
Retailer 3
-
£164 GBP
View
A
Retailer 4
-
£182 GBP
View
A
Retailer 5
-
£210 GBP
View
B+
Retailer 6
-
£290 GBP
View
A
Retailer 7
-
£290 GBP
View
B+
Retailer 8
-
£353 GBP
View
B+
Retailer 9
-
£353 GBP
View
B
Retailer 10
-
£525 GBP
View
B
Retailer 11
-
£554 GBP
View
Most Expensive
B
MOH London
LG706577738 · Nov 5
£761 GBP
View
11 more retailers have this diamond
Prices start from £131 GBPSave up to £629 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
1.34ct Heart
£131 GBP