CaratHunter
Plans
Heart|Lab Grown|IGI

1.18ct G VS1 Heart Lab Grown Diamond

EX • G/VS1 • IGI LG617478918

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG617478918

Diamond specifications and retailer prices

From £199 GBP
As of November 4, 2026
Save £610 GBP (75%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: £810 GBP at MOH London · As of November 5, 2026
View at MOH London

About this 1.18ct lab-grown heart diamond

This 1.18ct lab-grown heart sits in the classic one-carat band, graded G colour (near-colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG617478918 or 617478918. Listed at 8 retailers as of November 4, 2026, with prices from £199 to £810, a £610 spread on the same certified stone. MOH London lists it at £810. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.18
Carat
G
Colour
VS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.8°
Pavilion angle39.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG617478918
Dimensions6.80 × 7.15 × 4.08 mm
L/W Ratio1.05
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
6.80 mm7.15 mm1.18 ctG / VS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG617478918
Side View
Table 63.0%Crown 34.8°Girdle: MED-STKPavilion 39.3°Culet: NoneDepth 57.1%

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 4
Current: £810 GBP|Low: £280 GBP|High: £821 GBP|Avg: £454 GBP|+2.4%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 5, 2026
Retailer 3£294 GBP
Retailer 4£305 GBP
Retailer 2£312 GBP
Retailer 5£312 GBP
Retailer 7£571 GBP
Retailer 6£598 GBP
MOH London£810 GBP

43 data points across 7 retailers

8 retailers£199 GBP to £810 GBP

A
Cheapest Retailer
-
£199 GBP
A
Retailer 2
-
£294 GBP
View
B+
Retailer 3
-
£305 GBP
View
B+
Retailer 4
-
£312 GBP
View
B+
Retailer 5
-
£312 GBP
View
B
Retailer 6
-
£588 GBP
View
B
Retailer 7
-
£598 GBP
View
Most Expensive
B
MOH London
LG617478918 · Nov 5
£810 GBP
View
7 more retailers have this diamond
Prices start from £199 GBPSave up to £610 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
1.18ct Heart
£199 GBP