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Asscher|Lab Grown|IGI

1.09ct E SI1 Asscher Lab Grown Diamond

EX • E/SI1 • IGI LG845650120

Shape and cutting style on the report: Square emerald cut

Certificate IGI LG845650120

Diamond specifications and retailer prices

From £114 GBP
$153 USD
As of October 30, 2026
Save £341 GBP (75%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: £455 GBP at Brilliant Earth · As of October 26, 2026
View at Brilliant Earth

About this 1.09ct lab-grown asscher diamond

This 1.09ct lab-grown asscher sits in the classic one-carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG845650120 or 845650120. Listed at 3 retailers as of October 26, 2026, with prices from £114 to £455, a £341 spread on the same certified stone. Brilliant Earth lists it at £455. 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

1.09
Carat
E
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.4°
Pavilion angle39.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG845650120
Dimensions5.70 × 5.69 × 3.68 mm
L/W Ratio1.00
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
5.70 mm5.69 mm1.09 ctE / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG845650120
Side View
Table 63.0%Crown 35.4°Girdle: MediumPavilion 39.4°Culet: NoneDepth 64.7%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 30
Current: £455 GBP|Low: £114 GBP|High: £455 GBP|Avg: £302 GBP
Brilliant Earth
Retailer 2
Retailer 3
October 27, 2026
Retailer 2£114 GBP
Retailer 3£225 GBP
Brilliant Earth£455 GBP

11 data points across 3 retailers

3 retailers£114 GBP to £455 GBP

A
Cheapest Retailer
-
£114 GBP
$153 USD
Final sale: no returns
A
Retailer 2
-
£225 GBP
View
Most Expensive
B
Brilliant Earth
22150109A · Oct 26
£455 GBP
$610 USD
View
2 more retailers have this diamond
Prices start from £114 GBPSave up to £341 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
1.09ct Asscher
£114 GBP