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Asscher|Lab Grown|IGI

1.54ct D SI1 Asscher Lab Grown Diamond

ID • D/SI1 • IGI LG529258404

Shape and cutting style on the report: Square emerald cut

Certificate IGI LG529258404

Diamond specifications and retailer prices

From £160 GBP
$214 USD
As of October 30, 2026
Save £781 GBP (83%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £940 GBP at Brilliant Earth · As of October 30, 2026
View at Brilliant Earth

About this 1.54ct lab-grown asscher diamond

This 1.54ct lab-grown asscher sits in the one-and-a-half to two carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG529258404 or 529258404. Listed at 11 retailers as of October 30, 2026, with prices from £160 to £940, a £781 spread on the same certified stone. Brilliant Earth lists it at £940. 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

1.54
Carat
D
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle28.3°
Pavilion angle46.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG529258404
Dimensions6.29 × 6.14 × 4.30 mm
L/W Ratio1.02
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
6.29 mm6.14 mm1.54 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG529258404
Side View
Table 64.5%Crown 28.3°Girdle: MediumPavilion 46.5°Culet: NoneDepth 70.0%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 30
Current: £940 GBP|Low: £133 GBP|High: £1,202 GBP|Avg: £487 GBP|-21.7%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 31, 2026
Retailer 10£160 GBP
Retailer 3£207 GBP
Retailer 8£239 GBP
Retailer 9£319 GBP
Retailer 2£321 GBP
Retailer 7£370 GBP
Retailer 5£376 GBP
Retailer 4£448 GBP
Retailer 11£608 GBP
Retailer 6£829 GBP
Brilliant Earth£940 GBP

43 data points across 11 retailers

11 retailers£160 GBP to £940 GBP

A
Cheapest Retailer
-
£160 GBP
$214 USD
Final sale: no returns
A
Retailer 2
-
£207 GBP
$278 USD
View
B+
Retailer 3
-
£239 GBP
$320 USD
View
A
Retailer 4
-
£319 GBP
View
A
Retailer 5
-
£321 GBP
View
A
Retailer 6
-
£370 GBP
$496 USD
View
A
Retailer 7
-
£376 GBP
€480 EUR
View
B+
Retailer 8
-
£448 GBP
$600 USD
View
B
Retailer 9
-
£608 GBP
$814 USD
View
B
Retailer 10
-
£829 GBP
View
Most Expensive
B
Brilliant Earth
14223675A · Oct 30
£940 GBP
$1,260 USD
View
10 more retailers have this diamond
Prices start from £160 GBPSave up to £781 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
1.54ct Asscher
£160 GBP