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Round|Lab Grown|IGI

1.00ct E SI2 Round Lab Grown Diamond

VG • E/SI2 • IGI LG407942412

Shape and cutting style on the report: Round brilliant

Certificate IGI LG407942412

Diamond specifications and retailer prices

From £101 GBP
$135 USD
As of October 29, 2026
Save £952 GBP (90%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £1,054 GBP at MOH London · As of October 29, 2026
View at MOH London

About this 1ct lab-grown round diamond

This 1ct lab-grown round sits in the classic one-carat band, graded E colour (colourless) and SI2 clarity (slightly-included), with a very-good cut grade and certified by IGI LG407942412 or 407942412. Listed at 14 retailers as of October 29, 2026, with prices from £101 to £1,054, a £952 spread on the same certified stone. MOH London lists it at £1,054. 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
E
Colour
SI2
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle32°
Pavilion angle40.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG407942412
Dimensions6.39 × 6.35 × 3.87 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory grown diamond was created by high pressure high temperature process (HPHT) Type II
Top View
6.39 mm6.35 mm1.00 ctE / SI2
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI LG407942412
Side View
Table 57.0%Crown 32°Girdle: STK-THKPavilion 40.1°Culet: NoneDepth 60.6%

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: Oct 29
Current: £1,054 GBP|Low: £81 GBP|High: £1,060 GBP|Avg: £307 GBP|+0.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
October 29, 2026
Retailer 5£101 GBP
Retailer 8£114 GBP
Retailer 6£167 GBP
Retailer 2£212 GBP
Retailer 3£222 GBP
Retailer 9£243 GBP
Retailer 7£310 GBP
Retailer 4£427 GBP
MOH London£1,054 GBP

40 data points across 9 retailers

14 retailers£101 GBP to £1,054 GBP

A
Cheapest Retailer
-
£101 GBP
$135 USD
A
Retailer 2
-
£114 GBP
$152 USD
View
Final sale: no returns
A
Retailer 3
-
£117 GBP
$156 USD
View
B+
Retailer 4
-
£125 GBP
$167 USD
View
B+
Retailer 5
-
£125 GBP
$167 USD
View
B+
Retailer 6
-
£144 GBP
HK$1,500 HKD
View
B+
Retailer 7
-
£167 GBP
$222 USD
View
B+
Retailer 8
-
£212 GBP
View
B+
Retailer 9
-
£222 GBP
€282 EUR
View
B+
Retailer 10
-
£243 GBP
$324 USD
View
B
Retailer 11
-
£310 GBP
$413 USD
View
B
Retailer 12
-
£404 GBP
$538 USD
View
B
Retailer 13
-
£427 GBP
$568 USD
View
Most Expensive
B
MOH London
LG407942412 · Oct 29
£1,054 GBP
View
13 more retailers have this diamond
Prices start from £101 GBPSave up to £952 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
1.00ct Round
£101 GBP