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1.57ct E I1 Round Lab Grown Diamond

ID • E/I1 • IGI LG492143095

Shape and cutting style on the report: Round brilliant

Certificate IGI LG492143095

Diamond specifications and retailer prices

From £297 GBP
$395 USD
As of October 28, 2026
Save £487 GBP (62%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: £784 GBP at MOH London · As of October 26, 2026
View at MOH London

About this 1.57ct lab-grown round diamond

This 1.57ct lab-grown round sits in the one-and-a-half to two carat band, graded E colour (colourless) and I1 clarity (included), with a top-tier cut grade and certified by IGI LG492143095 or 492143095. Listed at 3 retailers as of October 26, 2026, with prices from £297 to £784, a £487 spread on the same certified stone. MOH London lists it at £784. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.57
Carat
E
Colour
I1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.5°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG492143095
Dimensions7.45 × 7.50 × 4.59 mm
L/W Ratio1.01
Girdle conditionFaceted
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process.
Top View
7.45 mm7.50 mm1.57 ctE / I1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG492143095
Side View
Table 57.0%Crown 34.5°Girdle: MediumPavilion 40.8°Culet: NoneDepth 61.4%

Caratlytics Score

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B+
Very Good
Strong quality and value balance
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Price History

Last verified: Oct 28
Current: £784 GBP|Low: £225 GBP|High: £792 GBP|Avg: £477 GBP|-0.8%
MOH London
Retailer 2
Retailer 3
October 26, 2026
Retailer 2£297 GBP
Retailer 3£364 GBP
MOH London£784 GBP

8 data points across 3 retailers

3 retailers£297 GBP to £784 GBP

B+
Cheapest Retailer
-
£297 GBP
$395 USD
B+
Retailer 2
-
£364 GBP
$485 USD
View
Most Expensive
B
MOH London
LG492143095 · Oct 26
£784 GBP
View
2 more retailers have this diamond
Prices start from £297 GBPSave up to £487 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+
1.57ct Round
£297 GBP