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Heart|Lab Grown|IGI

1.00ct I SI2 Heart Lab Grown Diamond

VG • I/SI2 • IGI LG407945556

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG407945556

Diamond specifications and retailer prices

From £456 GBP
As of November 6, 2026
Save £2,374 GBP (84%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £2,829 GBP at MOH London · As of November 5, 2026
View at MOH London

About this 1ct lab-grown heart diamond

This 1ct lab-grown heart sits in the classic one-carat band, graded I colour (near-colourless) and SI2 clarity (slightly-included), with a very-good cut grade and certified by IGI LG407945556 or 407945556. Listed at 10 retailers as of November 5, 2026, with prices from £456 to £2,829, a £2,374 spread on the same certified stone. MOH London lists it at £2,829. 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

1.00
Carat
I
Colour
SI2
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryGood
FluorescenceNone
Crown angle36.3°
Pavilion angle43.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG407945556
Dimensions5.76 × 7.03 × 4.08 mm
L/W Ratio1.22
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory grown diamond was created by chemical vapor deposition process (CVD) Type IIa
Top View
5.76 mm7.03 mm1.00 ctI / SI2
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryGood
FluorescenceNone
CertificateIGI LG407945556
Side View
Table 62.5%Crown 36.3°Girdle: MED-ETKPavilion 43.4°Culet: NoneDepth 58.0%

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: £2,829 GBP|Low: £456 GBP|High: £2,871 GBP|Avg: £1,245 GBP|-0.3%
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£652 GBP
Retailer 8£710 GBP
Retailer 9£730 GBP
Retailer 5£757 GBP
Retailer 10£1,147 GBP
Retailer 6£1,216 GBP
Retailer 3£1,740 GBP
Retailer 7£2,128 GBP
MOH London£2,829 GBP

17 data points across 10 retailers

10 retailers£456 GBP to £2,829 GBP

B+
Cheapest Retailer
-
£456 GBP
B+
Retailer 2
-
£652 GBP
View
B+
Retailer 3
-
£710 GBP
View
B+
Retailer 4
-
£730 GBP
View
Final sale: no returns
B+
Retailer 5
-
£757 GBP
View
Retailer 6
-
£757 GBP
View
Price last confirmed 25 days ago
B
Retailer 7
-
£1,216 GBP
View
B
Retailer 8
-
£1,740 GBP
View
C
Retailer 9
-
£2,128 GBP
View
Most Expensive
C
MOH London
LG407945556 · Nov 5
£2,829 GBP
View
9 more retailers have this diamond
Prices start from £456 GBPSave up to £2,374 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+
1.00ct Heart
£456 GBP