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Round|Lab Grown|IGI

1.40ct E SI1 Round Lab Grown Diamond

ID • E/SI1 • IGI LG602355145

Shape and cutting style on the report: Round brilliant

Certificate IGI LG602355145

Diamond specifications and retailer prices

From £131 GBP
$175 USD
As of October 29, 2026
Save £1,123 GBP (90%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £1,254 GBP at Do Amore Diamonds · As of October 29, 2026
View at Do Amore Diamonds

About this 1.4ct lab-grown round diamond

This 1.4ct lab-grown round sits in the one-and-a-quarter to one-and-a-half carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG602355145 or 602355145. Listed at 10 retailers as of October 29, 2026, with prices from £131 to £1,254, a £1,123 spread on the same certified stone. Do Amore Diamonds lists it at £1,254. 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

1.40
Carat
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.9°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG602355145
Dimensions7.18 × 7.26 × 4.39 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
7.18 mm7.26 mm1.40 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG602355145
Side View
Table 58.0%Crown 33.9°Girdle: MediumPavilion 40.8°Culet: NoneDepth 60.9%

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: £1,254 GBP|Low: £104 GBP|High: £1,254 GBP|Avg: £571 GBP|+2.4%
Do Amore Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
October 29, 2026
Retailer 8£131 GBP
Retailer 11£145 GBP
Retailer 6£152 GBP
Retailer 10£288 GBP
Retailer 13£324 GBP
Retailer 3£402 GBP
Retailer 12£406 GBP
Retailer 7£549 GBP
Retailer 9£574 GBP
Retailer 5£828 GBP
Retailer 2£839 GBP
Retailer 4£1,059 GBP
Do Amore Diamonds£1,254 GBP

15 data points across 13 retailers

10 retailers£131 GBP to £1,254 GBP

A
Cheapest Retailer
-
£131 GBP
$175 USD
A
Retailer 2
-
£145 GBP
$194 USD
View
Final sale: no returns
A
Retailer 3
-
£152 GBP
$203 USD
View
B+
Retailer 4
-
£288 GBP
$386 USD
View
B
Retailer 5
-
£549 GBP
$736 USD
View
B
Retailer 6
-
£574 GBP
$769 USD
View
B
Retailer 7
-
£828 GBP
$1,110 USD
View
B
Retailer 8
-
£839 GBP
View
B
Retailer 9
-
£1,172 GBP
$1,570 USD
View
Most Expensive
B
Do Amore Diamonds
27-677625FB0 · Oct 29
£1,254 GBP
$1,680 USD
View
9 more retailers have this diamond
Prices start from £131 GBPSave up to £1,123 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
1.40ct Round
£131 GBP