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Asscher|Lab Grown|IGI

1.51ct E SI1 Asscher Lab Grown Diamond

ID • E/SI1 • IGI LG516243211

Shape and cutting style on the report: Square emerald cut

Certificate IGI LG516243211

Diamond specifications and retailer prices

From £148 GBP
$198 USD
As of October 30, 2026
Save £666 GBP (82%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £822 GBP at MOH London · As of October 21, 2026
View at MOH London

About this 1.51ct lab-grown asscher diamond

This 1.51ct 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 LG516243211 or 516243211. Listed at 11 retailers as of October 30, 2026, with a 451% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

1.51
Carat
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle27.4°
Pavilion angle43.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG516243211
Dimensions6.34 × 6.21 × 4.21 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
6.34 mm6.21 mm1.51 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG516243211
Side View
Table 60.5%Crown 27.4°Girdle: MED-STKPavilion 43.1°Culet: NoneDepth 67.8%

Caratlytics Score

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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: £822 GBP|Low: £131 GBP|High: £903 GBP|Avg: £458 GBP|-0.5%
MOH London
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£148 GBP
Retailer 3£204 GBP
Retailer 7£220 GBP
Retailer 2£294 GBP
Retailer 8£296 GBP
Retailer 6£357 GBP
Retailer 5£369 GBP
Retailer 4£409 GBP
Retailer 11£567 GBP
Retailer 9£813 GBP
MOH London£822 GBP

42 data points across 11 retailers

11 retailers£148 GBP to £813 GBP

A
Cheapest Retailer
-
£148 GBP
$198 USD
Final sale: no returns
A
Retailer 2
-
£204 GBP
$273 USD
View
B+
Retailer 3
-
£220 GBP
$295 USD
View
A
Retailer 4
-
£294 GBP
View
A
Retailer 5
-
£296 GBP
View
A
Retailer 6
-
£357 GBP
$479 USD
View
A
Retailer 7
-
£369 GBP
€471 EUR
View
A
Retailer 8
-
£409 GBP
$548 USD
View
B+
Retailer 9
-
£567 GBP
$760 USD
View
B
Retailer 10
-
£813 GBP
$1,090 USD
View
Most Expensive
MOH London
LG516243211 · Oct 21
£822 GBP
View
Price last confirmed 10 days ago
10 more retailers have this diamond
Prices start from £148 GBPSave up to £666 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
1.51ct Asscher
£148 GBP