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Heart|Lab Grown|IGI

1.01ct E SI1 Heart Lab Grown Diamond

EX • E/SI1 • IGI LG839688037

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG839688037

Diamond specifications and retailer prices

From £220 GBP
As of November 6, 2026
Save £453 GBP (67%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: £673 GBP at MOH London · As of November 2, 2026
View at MOH London

About this 1.01ct lab-grown heart diamond

This 1.01ct lab-grown heart sits in the classic one-carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG839688037 or 839688037. Listed at 7 retailers as of November 2, 2026, with prices from £220 to £673, a £453 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

1.01
Carat
E
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.9°
Pavilion angle38.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG839688037
Dimensions5.91 × 6.75 × 4.06 mm
L/W Ratio1.14
Girdle conditionFaceted
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
5.91 mm6.75 mm1.01 ctE / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG839688037
Side View
Table 64.0%Crown 35.9°Girdle: STK-THKPavilion 38.7°Culet: NoneDepth 60.1%

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: £673 GBP|Low: £220 GBP|High: £681 GBP|Avg: £367 GBP|-1.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 5, 2026
Retailer 5£220 GBP
Retailer 2£249 GBP
Retailer 4£262 GBP
Retailer 3£273 GBP
Retailer 6£382 GBP
Retailer 7£504 GBP
MOH London£673 GBP

35 data points across 7 retailers

7 retailers£220 GBP to £673 GBP

A
Cheapest Retailer
-
£220 GBP
B+
Retailer 2
-
£249 GBP
View
B+
Retailer 3
-
£262 GBP
View
B+
Retailer 4
-
£273 GBP
View
B
Retailer 5
-
£382 GBP
View
B
Retailer 6
-
£504 GBP
View
Most Expensive
B
MOH London
LG839688037 · Nov 2
£673 GBP
View
6 more retailers have this diamond
Prices start from £220 GBPSave up to £453 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
1.01ct Heart
£220 GBP