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Heart|Lab Grown|IGI

1.00ct E SI2 Heart Lab Grown Diamond

ID • E/SI2 • IGI LG831648756

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG831648756

Diamond specifications and retailer prices

From £116 GBP
As of November 6, 2026
Save £488 GBP (81%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: £603 GBP at MOH London · As of November 4, 2026
View at MOH London

About this 1ct lab-grown heart diamond

This 1ct lab-grown heart sits in the classic one-carat band, graded E colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG831648756 or 831648756. Listed at 16 retailers as of November 4, 2026, with prices from £116 to £603, a £488 spread on the same certified stone. MOH London lists it at £603. 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

1.00
Carat
E
Colour
SI2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.1°
Pavilion angle39.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG831648756
Dimensions6.84 × 6.22 × 4.06 mm
L/W Ratio1.10
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
6.84 mm6.22 mm1.00 ctE / SI2
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG831648756
Side View
Table 66.0%Crown 34.1°Girdle: MED-STKPavilion 39.6°Culet: NoneDepth 59.4%

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 6
Current: £603 GBP|Low: £115 GBP|High: £619 GBP|Avg: £298 GBP|-0.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 6, 2026
Retailer 6£116 GBP
Retailer 3£152 GBP
Retailer 2£172 GBP
Retailer 4£198 GBP
Retailer 5£219 GBP
Retailer 10£223 GBP
Retailer 8£242 GBP
Retailer 7£246 GBP
Retailer 9£332 GBP
Retailer 11£358 GBP
Retailer 12£418 GBP
MOH London£603 GBP

42 data points across 12 retailers

16 retailers£116 GBP to £603 GBP

Retailer 1
-
£105 GBP
Price last confirmed 20 days ago
A
Retailer 2
-
£116 GBP
View
Final sale: no returns
Retailer 3
-
£123 GBP
View
Price last confirmed 22 days ago
Retailer 4
-
£131 GBP
View
Price last confirmed 22 days ago
A
Retailer 5
-
£152 GBP
View
A
Retailer 6
-
£172 GBP
View
Retailer 7
-
£198 GBP
View
Price last confirmed 12 days ago
B+
Retailer 8
-
£219 GBP
View
B+
Retailer 9
-
£223 GBP
View
B+
Retailer 10
-
£242 GBP
View
B+
Retailer 11
-
£246 GBP
View
B
Retailer 12
-
£332 GBP
View
B
Retailer 13
-
£358 GBP
View
B
Retailer 14
-
£418 GBP
View
Retailer 15
-
£421 GBP
View
Price last confirmed 21 days ago
Most Expensive
B
MOH London
LG831648756 · Nov 4
£603 GBP
View
15 more retailers have this diamond
Prices start from £116 GBPSave up to £488 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
1.00ct Heart
£116 GBP