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Asscher|Lab Grown|IGI

1.50ct F SI1 Asscher Lab Grown Diamond

ID • F/SI1 • IGI LG582378248

Shape and cutting style on the report: Square emerald cut

Certificate IGI LG582378248

Diamond specifications and retailer prices

From £179 GBP
As of November 4, 2026
Save £727 GBP (80%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £906 GBP at Brilliant Earth · As of November 4, 2026
View at Brilliant Earth

About this 1.5ct lab-grown asscher diamond

This 1.5ct lab-grown asscher sits in the one-and-a-half to two carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG582378248 or 582378248. Listed at 13 retailers as of November 4, 2026, with prices from £179 to £906, a £727 spread on the same certified stone. Brilliant Earth lists it at £906. 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

1.50
Carat
F
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.1°
Pavilion angle40.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG582378248
Dimensions6.34 × 6.29 × 4.07 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
6.34 mm6.29 mm1.50 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG582378248
Side View
Table 64.0%Crown 33.1°Girdle: MediumPavilion 40.3°Culet: NoneDepth 64.7%

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: Nov 4
Current: £906 GBP|Low: £179 GBP|High: £1,233 GBP|Avg: £484 GBP|-26.5%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 6, 2026
Retailer 10£179 GBP
Retailer 11£228 GBP
Retailer 9£276 GBP
Retailer 2£331 GBP
Retailer 8£353 GBP
Retailer 5£358 GBP
Retailer 12£385 GBP
Retailer 4£421 GBP
Retailer 7£624 GBP
Retailer 3£665 GBP
Retailer 6£781 GBP
Brilliant Earth£906 GBP

45 data points across 12 retailers

13 retailers£179 GBP to £906 GBP

A
Cheapest Retailer
-
£179 GBP
Final sale: no returns
A
Retailer 2
-
£228 GBP
View
B+
Retailer 3
-
£276 GBP
View
Retailer 4
-
£331 GBP
View
A
Retailer 5
-
£353 GBP
View
A
Retailer 6
-
£358 GBP
View
A
Retailer 7
-
£385 GBP
View
B+
Retailer 8
-
£421 GBP
View
B+
Retailer 9
-
£538 GBP
View
B
Retailer 10
-
£624 GBP
View
B+
Retailer 11
-
£665 GBP
View
B
Retailer 12
-
£781 GBP
View
Most Expensive
B
Brilliant Earth
7442735A · Nov 4
£906 GBP
$1,220 USD
View
12 more retailers have this diamond
Prices start from £179 GBPSave up to £727 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
1.50ct Asscher
£179 GBP