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Oval|Lab Grown|IGI

1.57ct E SI1 Oval Lab Grown Diamond

EX • E/SI1 • IGI LG577390712

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG577390712

Diamond specifications and retailer prices

From £164 GBP
$218 USD
As of October 29, 2026
Save £653 GBP (80%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £816 GBP at MOH London · As of October 29, 2026
View at MOH London

About this 1.57ct lab-grown oval diamond

This 1.57ct lab-grown oval sits in the one-and-a-half to two carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG577390712 or 577390712. Listed at 13 retailers as of October 29, 2026, with prices from £164 to £816, a £653 spread on the same certified stone. MOH London lists it at £816. 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

1.57
Carat
E
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.7°
Pavilion angle40.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG577390712
Dimensions9.12 × 6.60 × 4.13 mm
L/W Ratio1.38
Girdle conditionFaceted
Culet sizePointed
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
9.12 mm6.60 mm1.57 ctE / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG577390712
Side View
Table 62.0%Crown 36.7°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 62.6%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 29
Current: £816 GBP|Low: £157 GBP|High: £899 GBP|Avg: £407 GBP|-0.6%
MOH London
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 30, 2026
Retailer 8£164 GBP
Retailer 4£189 GBP
Retailer 3£203 GBP
Retailer 10£203 GBP
Retailer 2£260 GBP
Retailer 11£347 GBP
Retailer 12£369 GBP
Retailer 6£376 GBP
Retailer 5£451 GBP
Retailer 13£651 GBP
Retailer 7£653 GBP
Retailer 9£702 GBP
MOH London£816 GBP

45 data points across 13 retailers

13 retailers£164 GBP to £816 GBP

A
Cheapest Retailer
-
£164 GBP
$218 USD
A
Retailer 2
-
£189 GBP
$252 USD
View
A
Retailer 3
-
£203 GBP
$270 USD
View
A
Retailer 4
-
£203 GBP
$270 USD
View
A
Retailer 5
-
£260 GBP
View
B+
Retailer 6
-
£347 GBP
$462 USD
View
A
Retailer 7
-
£369 GBP
$491 USD
View
A
Retailer 8
-
£376 GBP
View
B+
Retailer 9
-
£451 GBP
$601 USD
View
B
Retailer 10
-
£651 GBP
$867 USD
View
B
Retailer 11
-
£653 GBP
$870 USD
View
Retailer 12
-
£702 GBP
$935 USD
View
Price last confirmed 8 days ago
Most Expensive
B
MOH London
LG577390712 · Oct 29
£816 GBP
View
12 more retailers have this diamond
Prices start from £164 GBPSave up to £653 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
1.57ct Oval
£164 GBP