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Heart|Lab Grown|IGI

1.01ct J SI1 Heart Lab Grown Diamond

ID • J/SI1 • IGI LG436073557

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG436073557

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)
11 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 top-tier cut grade and certified by IGI LG436073557 or 436073557. Listed at 11 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. 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

1.01
Carat
J
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle35.8°
Pavilion angle43.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG436073557
Dimensions6.85 × 6.23 × 4.10 mm
L/W Ratio1.10
Girdle conditionFaceted
Culet sizePointed
Top View
6.85 mm6.23 mm1.01 ctJ / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI LG436073557
Side View
Table 61.0%Crown 35.8°Girdle: MED-VTKPavilion 43.4°Culet: NoneDepth 59.9%

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: £2,714 GBP|Avg: £1,311 GBP|-1.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 5, 2026
Retailer 2£456 GBP
Retailer 4£681 GBP
Retailer 7£763 GBP
Retailer 5£790 GBP
Retailer 8£923 GBP
Retailer 9£1,155 GBP
Retailer 6£1,268 GBP
Retailer 3£1,759 GBP
Retailer 10£2,264 GBP
MOH London£2,674 GBP

12 data points across 10 retailers

11 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
-
£763 GBP
View
Final sale: no returns
B
Retailer 5
-
£790 GBP
View
Retailer 6
-
£790 GBP
View
Price last confirmed 25 days ago
B
Retailer 7
-
£923 GBP
View
B
Retailer 8
-
£1,268 GBP
View
B
Retailer 9
-
£1,759 GBP
View
C
Retailer 10
-
£2,223 GBP
View
Most Expensive
B
MOH London
LG436073557 · Nov 5
£2,674 GBP
View
10 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