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Oval|Lab Grown|IGI

1.57ct E SI1 Oval Lab Grown Diamond

EX • E/SI1 • IGI LG847603178

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG847603178

Diamond specifications and retailer prices

From £171 GBP
$228 USD
As of October 30, 2026
Save £647 GBP (79%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: £819 GBP at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

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 LG847603178 or 847603178. Listed at 3 retailers as of October 29, 2026, with prices from £171 to £819, a £647 spread on the same certified stone. Brilliant Earth lists it at £819. 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 angle34.4°
Pavilion angle40.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG847603178
Dimensions9.46 × 6.50 × 4.03 mm
L/W Ratio1.46
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
9.46 mm6.50 mm1.57 ctE / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG847603178
Side View
Table 62.0%Crown 34.4°Girdle: MED-STKPavilion 40.9°Culet: NoneDepth 62.0%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 30
Current: £819 GBP|Low: £171 GBP|High: £819 GBP|Avg: £524 GBP
Brilliant Earth
Retailer 2
Retailer 3
October 30, 2026
Retailer 3£171 GBP
Retailer 2£360 GBP
Brilliant Earth£819 GBP

8 data points across 3 retailers

3 retailers£171 GBP to £819 GBP

A
Cheapest Retailer
-
£171 GBP
$228 USD
Final sale: no returns
A
Retailer 2
-
£360 GBP
View
Most Expensive
B
Brilliant Earth
22227123A · Oct 29
£819 GBP
$1,090 USD
View
2 more retailers have this diamond
Prices start from £171 GBPSave up to £647 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
£171 GBP