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Heart|Lab Grown|IGI

1.10ct E SI1 Heart Lab Grown Diamond

ID • E/SI1 • IGI LG851621135

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG851621135

Diamond specifications and retailer prices

From £131 GBP
As of November 6, 2026
Save £549 GBP (81%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £680 GBP at MOH London · As of November 4, 2026
View at MOH London

About this 1.1ct lab-grown heart diamond

This 1.1ct 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 LG851621135 or 851621135. Listed at 10 retailers as of November 4, 2026, with prices from £131 to £680, a £549 spread on the same certified stone. MOH London lists it at £680. 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

1.10
Carat
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle29.9°
Pavilion angle38.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG851621135
Dimensions7.11 × 6.84 × 3.90 mm
L/W Ratio1.04
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.11 mm6.84 mm1.10 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG851621135
Side View
Table 65.0%Crown 29.9°Girdle: STK-THKPavilion 38.7°Culet: NoneDepth 54.9%

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: £680 GBP|Low: £131 GBP|High: £682 GBP|Avg: £309 GBP|-0.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 6, 2026
Retailer 7£131 GBP
Retailer 2£188 GBP
Retailer 8£198 GBP
Retailer 5£251 GBP
Retailer 9£252 GBP
Retailer 3£253 GBP
Retailer 6£277 GBP
Retailer 4£383 GBP
Retailer 10£510 GBP
MOH London£680 GBP

7 data points across 10 retailers

10 retailers£131 GBP to £680 GBP

A
Cheapest Retailer
-
£131 GBP
Final sale: no returns
A
Retailer 2
-
£188 GBP
View
B+
Retailer 3
-
£198 GBP
View
B+
Retailer 4
-
£251 GBP
View
B+
Retailer 5
-
£252 GBP
View
B+
Retailer 6
-
£253 GBP
View
B+
Retailer 7
-
£277 GBP
View
B+
Retailer 8
-
£383 GBP
View
B
Retailer 9
-
£510 GBP
View
Most Expensive
B
MOH London
LG851621135 · Nov 4
£680 GBP
View
9 more retailers have this diamond
Prices start from £131 GBPSave up to £549 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
1.10ct Heart
£131 GBP