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Oval|Lab Grown|IGI

1.56ct E SI1 Oval Lab Grown Diamond

ID • E/SI1 • IGI LG705544580

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG705544580

Diamond specifications and retailer prices

From £858 GBP
$1,150 USD
As of October 29, 2026
1 retailer carries this diamond
Only listing: £858 GBP at Brilliant Earth
Only one retailer lists this diamond right now, and it is shown above, so there is nothing to unlock. Similar diamonds are carried by several retailers.
View at Brilliant Earth

About this 1.56ct lab-grown oval diamond

This 1.56ct 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 LG705544580 or 705544580. Listed at a single retailer as of October 29, 2026. If it later appears at another store, Carat Hunter will surface the price comparison automatically. 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

1.56
Carat
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.4°
Pavilion angle40.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG705544580
Dimensions9.64 × 6.54 × 3.98 mm
L/W Ratio1.47
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
9.64 mm6.54 mm1.56 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG705544580
Side View
Table 61.0%Crown 34.4°Girdle: MED-STKPavilion 40.4°Culet: NoneDepth 60.9%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Oct 29
Current: £858 GBP|Low: £129 GBP|High: £1,411 GBP|Avg: £524 GBP|-7.3%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
July 16, 2026
Retailer 5£282 GBP
Retailer 7£373 GBP
Retailer 9£377 GBP
Retailer 4£437 GBP
Retailer 3£470 GBP
Retailer 6£516 GBP
Retailer 8£595 GBP
Retailer 2£649 GBP
Brilliant Earth£858 GBP

73 data points across 9 retailers

1 retailer

B
Brilliant Earth
15347866A · Oct 29
£858 GBP
$1,150 USD
View

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
1.56ct Oval
£858 GBP