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Asscher|Lab Grown|IGI

1.55ct E SI1 Asscher Lab Grown Diamond

ID • E/SI1 • IGI LG508137596

Shape and cutting style on the report: Square emerald cut

Certificate IGI LG508137596

Diamond specifications and retailer prices

From £152 GBP
$203 USD
As of October 30, 2026
Save £774 GBP (84%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £925 GBP at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 1.55ct lab-grown asscher diamond

This 1.55ct lab-grown asscher 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 LG508137596 or 508137596. Listed at 12 retailers as of October 30, 2026, with prices from £152 to £925, a £774 spread on the same certified stone. Brilliant Earth lists it at £925. 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

1.55
Carat
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle16.5°
Pavilion angle39.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG508137596
Dimensions6.38 × 6.33 × 4.08 mm
L/W Ratio1.01
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
6.38 mm6.33 mm1.55 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG508137596
Side View
Table 64.0%Crown 16.5°Girdle: MediumPavilion 39.4°Culet: NoneDepth 64.5%

Caratlytics Score

How it works →
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 30
Current: £836 GBP|Low: £134 GBP|High: £1,351 GBP|Avg: £546 GBP|-38.1%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 1, 2026
Retailer 10£152 GBP
Retailer 8£225 GBP
Retailer 4£302 GBP
Retailer 9£303 GBP
Retailer 7£362 GBP
Retailer 6£378 GBP
Retailer 5£420 GBP
Retailer 11£579 GBP
Retailer 3£679 GBP
Retailer 2£783 GBP
Brilliant Earth£836 GBP

43 data points across 11 retailers

12 retailers£152 GBP to £925 GBP

A
Cheapest Retailer
-
£152 GBP
$203 USD
Final sale: no returns
B+
Retailer 2
-
£225 GBP
$302 USD
View
A
Retailer 3
-
£302 GBP
View
A
Retailer 4
-
£303 GBP
View
A
Retailer 5
-
£362 GBP
$485 USD
View
A
Retailer 6
-
£378 GBP
€482 EUR
View
A
Retailer 7
-
£420 GBP
$563 USD
View
B+
Retailer 8
-
£579 GBP
$776 USD
View
Retailer 9
-
£679 GBP
$910 USD
View
Price last confirmed 13 days ago
B
Retailer 10
-
£783 GBP
View
B
Retailer 11
-
£836 GBP
$1,120 USD
View
Most Expensive
B
Brilliant Earth
15296218A · Oct 31
£925 GBP
$1,240 USD
View
11 more retailers have this diamond
Prices start from £152 GBPSave up to £774 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
1.55ct Asscher
£152 GBP