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Asscher|Lab Grown|IGI

1.23ct D IF Asscher Lab Grown Diamond

ID • D/IF • IGI LG745518959

Shape and cutting style on the report: Square emerald cut

Certificate IGI LG745518959

Diamond specifications and retailer prices

From £170 GBP
$228 USD
As of October 30, 2026
Save £674 GBP (80%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £845 GBP at MOH London · As of November 1, 2026
View at MOH London

About this 1.23ct lab-grown asscher diamond

This 1.23ct lab-grown asscher sits in the classic one-carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG745518959 or 745518959. Listed at 11 retailers as of October 30, 2026, with prices from £170 to £845, a £674 spread on the same certified stone. MOH London lists it at £845. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.23
Carat
D
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle30.2°
Pavilion angle47.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG745518959
Dimensions5.89 × 5.87 × 4.01 mm
L/W Ratio1.00
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
5.89 mm5.87 mm1.23 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG745518959
Side View
Table 66.0%Crown 30.2°Girdle: MED-STKPavilion 47.1°Culet: NoneDepth 68.3%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 30
Current: £845 GBP|Low: £163 GBP|High: £2,276 GBP|Avg: £618 GBP|-11.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 1, 2026
Retailer 9£170 GBP
Retailer 11£196 GBP
Retailer 6£357 GBP
Retailer 7£358 GBP
Retailer 10£379 GBP
Retailer 4£391 GBP
Retailer 8£514 GBP
Retailer 2£570 GBP
Retailer 5£678 GBP
MOH London£845 GBP
Retailer 3£2,276 GBP

37 data points across 11 retailers

11 retailers£170 GBP to £845 GBP

A
Cheapest Retailer
-
£170 GBP
$228 USD
A
Retailer 2
-
£196 GBP
$263 USD
View
Final sale: no returns
Retailer 3
-
£219 GBP
$294 USD
View
Price last confirmed 38 days ago
A
Retailer 4
-
£357 GBP
$479 USD
View
Retailer 5
-
£358 GBP
$480 USD
View
Price last confirmed 5 days ago
Retailer 6
-
£379 GBP
€483 EUR
View
Price last confirmed 8 days ago
A
Retailer 7
-
£391 GBP
$524 USD
View
A
Retailer 8
-
£514 GBP
A$1,060 AUD
View
B+
Retailer 9
-
£570 GBP
$764 USD
View
B+
Retailer 10
-
£678 GBP
$908 USD
View
Most Expensive
B+
MOH London
LG745518959 · Nov 1
£845 GBP
View
10 more retailers have this diamond
Prices start from £170 GBPSave up to £674 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
1.23ct Asscher
£170 GBP