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Asscher|Lab Grown|IGI

1.50ct D SI1 Asscher Lab Grown Diamond

ID • D/SI1 • IGI LG517289274

Shape and cutting style on the report: Square emerald cut

Certificate IGI LG517289274

Diamond specifications and retailer prices

From £156 GBP
$209 USD
As of October 30, 2026
Save £762 GBP (83%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £918 GBP at Brilliant Earth · As of October 30, 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 D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG517289274 or 517289274. Listed at 12 retailers as of October 30, 2026, with prices from £156 to £918, a £762 spread on the same certified stone. Brilliant Earth lists it at £918. 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
D
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle26°
Pavilion angle45°
OriginLab Grown
Grading LabIGI
CertificateIGI LG517289274
Dimensions6.40 × 6.29 × 4.19 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
6.40 mm6.29 mm1.50 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG517289274
Side View
Table 64.0%Crown 26°Girdle: MediumPavilion 45°Culet: NoneDepth 66.6%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 30
Current: £918 GBP|Low: £130 GBP|High: £1,179 GBP|Avg: £494 GBP|-22.2%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
October 31, 2026
Retailer 10£156 GBP
Retailer 4£202 GBP
Retailer 8£233 GBP
Retailer 2£310 GBP
Retailer 9£312 GBP
Retailer 7£365 GBP
Retailer 6£368 GBP
Retailer 5£436 GBP
Retailer 11£595 GBP
Retailer 3£698 GBP
Retailer 12£812 GBP
Brilliant Earth£918 GBP

43 data points across 12 retailers

12 retailers£156 GBP to £918 GBP

A
Cheapest Retailer
-
£156 GBP
$209 USD
Final sale: no returns
A
Retailer 2
-
£202 GBP
$271 USD
View
B+
Retailer 3
-
£233 GBP
$312 USD
View
A
Retailer 4
-
£310 GBP
View
A
Retailer 5
-
£312 GBP
View
A
Retailer 6
-
£365 GBP
$489 USD
View
A
Retailer 7
-
£368 GBP
€470 EUR
View
B+
Retailer 8
-
£436 GBP
$584 USD
View
B+
Retailer 9
-
£595 GBP
$798 USD
View
Retailer 10
-
£698 GBP
$935 USD
View
Price last confirmed 10 days ago
B
Retailer 11
-
£812 GBP
View
Most Expensive
B
Brilliant Earth
14223320A · Oct 30
£918 GBP
$1,230 USD
View
11 more retailers have this diamond
Prices start from £156 GBPSave up to £762 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
£156 GBP