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Heart|Lab Grown|IGI

1.01ct J SI1 Heart Lab Grown Diamond

VG • J/SI1 • IGI LG414059737

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG414059737

Diamond specifications and retailer prices

From £456 GBP
As of November 6, 2026
Save £2,218 GBP (83%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £2,674 GBP at MOH London · As of November 5, 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 J colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI LG414059737 or 414059737. Listed at 10 retailers as of November 5, 2026, with prices from £456 to £2,674, a £2,218 spread on the same certified stone. MOH London lists it at £2,674. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.01
Carat
J
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle31.7°
Pavilion angle38°
OriginLab Grown
Grading LabIGI
CertificateIGI LG414059737
Dimensions7.09 × 5.91 × 3.97 mm
L/W Ratio1.20
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory grown diamond was created by chemical vapor deposition process (CVD) Type IIa
Top View
7.09 mm5.91 mm1.01 ctJ / SI1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI LG414059737
Side View
Table 51.5%Crown 31.7°Girdle: STK-VTKPavilion 38°Culet: NoneDepth 56.0%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: £2,674 GBP|Low: £456 GBP|High: £2,716 GBP|Avg: £1,253 GBP|-0.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 5, 2026
Retailer 2£456 GBP
Retailer 4£681 GBP
Retailer 5£790 GBP
Retailer 7£923 GBP
Retailer 8£1,155 GBP
Retailer 6£1,268 GBP
Retailer 3£1,759 GBP
MOH London£2,674 GBP

17 data points across 8 retailers

10 retailers£456 GBP to £2,674 GBP

B+
Cheapest Retailer
-
£456 GBP
B
Retailer 2
-
£681 GBP
View
B
Retailer 3
-
£741 GBP
View
B
Retailer 4
-
£790 GBP
View
Retailer 5
-
£790 GBP
View
Price last confirmed 25 days ago
B
Retailer 6
-
£923 GBP
View
B
Retailer 7
-
£1,268 GBP
View
C
Retailer 8
-
£1,759 GBP
View
C
Retailer 9
-
£2,223 GBP
View
Most Expensive
C
MOH London
LG414059737 · Nov 5
£2,674 GBP
View
9 more retailers have this diamond
Prices start from £456 GBPSave up to £2,218 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.

B+
1.01ct Heart
£456 GBP