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Asscher|Lab Grown|IGI

1.21ct F FL Asscher Lab Grown Diamond

ID • F/FL • IGI LG778638855

Shape and cutting style on the report: Square emerald cut

Certificate IGI LG778638855

Diamond specifications and retailer prices

From £159 GBP
As of November 4, 2026
Save £1,364 GBP (90%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £1,523 GBP at Do Amore Diamonds · As of November 5, 2026
View at Do Amore Diamonds

About this 1.21ct lab-grown asscher diamond

This 1.21ct lab-grown asscher sits in the classic one-carat band, graded F colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG778638855 or 778638855. Listed at 12 retailers as of November 4, 2026, with prices from £159 to £1,523, a £1,364 spread on the same certified stone. Do Amore Diamonds lists it at £1,523. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.21
Carat
F
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.4°
Pavilion angle41.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG778638855
Dimensions5.86 × 5.85 × 3.87 mm
L/W Ratio1.00
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
5.86 mm5.85 mm1.21 ctF / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG778638855
Side View
Table 62.0%Crown 33.4°Girdle: Slightly ThickPavilion 41.1°Culet: NoneDepth 66.2%

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: £1,523 GBP|Low: £159 GBP|High: £3,581 GBP|Avg: £1,089 GBP|-57.5%
Do Amore Diamonds
Retailer 2
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Retailer 11
Retailer 12
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Retailer 17
November 5, 2026
Retailer 13£159 GBP
Retailer 11£178 GBP
Retailer 2£184 GBP
Retailer 10£275 GBP
Retailer 15£303 GBP
Retailer 16£646 GBP
Retailer 14£700 GBP
Retailer 4£736 GBP
Retailer 7£856 GBP
Retailer 12£869 GBP
Retailer 6£933 GBP
Retailer 8£1,032 GBP
Retailer 3£1,055 GBP
Retailer 5£1,111 GBP
Retailer 17£1,419 GBP
Do Amore Diamonds£1,523 GBP
Retailer 9£1,876 GBP

28 data points across 17 retailers

12 retailers£159 GBP to £1,523 GBP

A
Cheapest Retailer
-
£159 GBP
A
Retailer 2
-
£178 GBP
View
Final sale: no returns
A
Retailer 3
-
£184 GBP
View
A
Retailer 4
-
£275 GBP
View
A
Retailer 5
-
£303 GBP
View
B+
Retailer 6
-
£646 GBP
View
B+
Retailer 7
-
£700 GBP
View
B+
Retailer 8
-
£736 GBP
View
B+
Retailer 9
-
£869 GBP
View
Retailer 10
-
£1,055 GBP
View
Price last confirmed 18 days ago
B
Retailer 11
-
£1,419 GBP
View
Most Expensive
B
Do Amore Diamonds
27-0FD8EDA0A · Nov 5
£1,523 GBP
$2,050 USD
View
11 more retailers have this diamond
Prices start from £159 GBPSave up to £1,364 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
1.21ct Asscher
£159 GBP