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Heart|Lab Grown|IGI

1.01ct G SI1 Heart Lab Grown Diamond

VG • G/SI1 • IGI LG425067501

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG425067501

Diamond specifications and retailer prices

From £426 GBP
As of November 6, 2026
Save £1,289 GBP (75%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £2,436 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 G colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI LG425067501 or 425067501. Listed at 13 retailers as of November 6, 2026, with a 303% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
G
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle34°
Pavilion angle41.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG425067501
Dimensions7.16 × 6.00 × 3.97 mm
L/W Ratio1.19
Girdle conditionFaceted
Culet sizePointed
Cert comments
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Top View
7.16 mm6.00 mm1.01 ctG / SI1
OriginLab Grown
CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateIGI LG425067501
Side View
Table 58.5%Crown 34°Girdle: MED-VTKPavilion 41.3°Culet: NoneDepth 55.4%

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: £2,436 GBP|Low: £426 GBP|High: £2,475 GBP|Avg: £932 GBP|-0.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 6, 2026
Retailer 3£426 GBP
Retailer 6£453 GBP
Retailer 9£507 GBP
Retailer 7£563 GBP
Retailer 4£657 GBP
Retailer 8£863 GBP
Retailer 2£869 GBP
Retailer 5£1,396 GBP
MOH London£2,436 GBP

45 data points across 9 retailers

13 retailers£426 GBP to £1,715 GBP

B+
Cheapest Retailer
-
£426 GBP
B
Retailer 2
-
£453 GBP
View
B
Retailer 3
-
£507 GBP
View
Final sale: no returns
B
Retailer 4
-
£508 GBP
View
B
Retailer 5
-
£563 GBP
View
Retailer 6
-
£563 GBP
View
Price last confirmed 21 days ago
B
Retailer 7
-
£657 GBP
View
B
Retailer 8
-
£863 GBP
View
B
Retailer 9
-
£869 GBP
View
C
Retailer 10
-
£1,396 GBP
View
C
Retailer 11
-
£1,480 GBP
View
C
Retailer 12
-
£1,715 GBP
View
Most Expensive
MOH London
LG425067501 · Nov 5
£2,436 GBP
View
Price under review
12 more retailers have this diamond
Prices start from £426 GBPSave up to £1,289 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
£426 GBP