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Heart|Lab Grown|IGI

1.21ct G VS2 Heart Lab Grown Diamond

ID • G/VS2 • IGI LG779610657

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG779610657

Diamond specifications and retailer prices

From £139 GBP
As of November 4, 2026
Save £664 GBP (83%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £803 GBP at MOH London · As of November 5, 2026
View at MOH London

About this 1.21ct lab-grown heart diamond

This 1.21ct lab-grown heart sits in the classic one-carat band, graded G colour (near-colourless) and VS2 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG779610657 or 779610657. Listed at 13 retailers as of November 4, 2026, with prices from £139 to £803, a £664 spread on the same certified stone. MOH London lists it at £803. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.21
Carat
G
Colour
VS2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.1°
Pavilion angle41.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG779610657
Dimensions6.79 × 7.23 × 4.38 mm
L/W Ratio1.06
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 mm7.23 mm1.21 ctG / VS2
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG779610657
Side View
Table 65.0%Crown 32.1°Girdle: MED-STKPavilion 41.2°Culet: NoneDepth 60.6%

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 4
Current: £803 GBP|Low: £133 GBP|High: £815 GBP|Avg: £386 GBP|-0.2%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 5, 2026
Retailer 4£139 GBP
Retailer 5£172 GBP
Retailer 7£172 GBP
Retailer 6£303 GBP
Retailer 2£309 GBP
Retailer 9£332 GBP
Retailer 8£411 GBP
Retailer 3£556 GBP
Retailer 10£594 GBP
MOH London£803 GBP

44 data points across 10 retailers

13 retailers£139 GBP to £803 GBP

A
Cheapest Retailer
-
£139 GBP
A
Retailer 2
-
£161 GBP
View
Retailer 3
-
£170 GBP
View
Price last confirmed 41 days ago
Retailer 4
-
£172 GBP
View
Price last confirmed 11 days ago
A
Retailer 5
-
£172 GBP
View
B+
Retailer 6
-
£303 GBP
View
B+
Retailer 7
-
£309 GBP
View
B+
Retailer 8
-
£332 GBP
View
B
Retailer 9
-
£411 GBP
View
B
Retailer 10
-
£554 GBP
View
B
Retailer 11
-
£556 GBP
View
Retailer 12
-
£594 GBP
View
Price last confirmed 18 days ago
Most Expensive
B
MOH London
LG779610657 · Nov 5
£803 GBP
View
12 more retailers have this diamond
Prices start from £139 GBPSave up to £664 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
1.21ct Heart
£139 GBP