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Asscher|Lab Grown|IGI

1.21ct D FL Asscher Lab Grown Diamond

ID • D/FL • IGI LG840634763

Shape and cutting style on the report: Square emerald cut

Certificate IGI LG840634763

Diamond specifications and retailer prices

From £293 GBP
$393 USD
As of October 30, 2026
Save £1,393 GBP (83%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: £1,687 GBP at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 1.21ct lab-grown asscher diamond

This 1.21ct lab-grown asscher sits in the classic one-carat band, graded D colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG840634763 or 840634763. Listed at 18 retailers as of October 30, 2026, with prices from £293 to £1,687, a £1,393 spread on the same certified stone. Brilliant Earth lists it at £1,687. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.21
Carat
D
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.2°
Pavilion angle41°
OriginLab Grown
Grading LabIGI
CertificateIGI LG840634763
Dimensions6.01 × 5.99 × 3.83 mm
L/W Ratio1.00
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
6.01 mm5.99 mm1.21 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG840634763
Side View
Table 65.0%Crown 37.2°Girdle: MediumPavilion 41°Culet: NoneDepth 63.9%

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: Oct 30
Current: £1,687 GBP|Low: £293 GBP|High: £1,687 GBP|Avg: £760 GBP
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
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Retailer 10
Retailer 11
Retailer 12
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Retailer 18
November 1, 2026
Retailer 9£293 GBP
Retailer 15£328 GBP
Retailer 6£364 GBP
Retailer 7£377 GBP
Retailer 16£474 GBP
Retailer 4£537 GBP
Retailer 3£578 GBP
Retailer 12£584 GBP
Retailer 2£597 GBP
Retailer 18£611 GBP
Retailer 14£626 GBP
Retailer 11£875 GBP
Retailer 8£1,159 GBP
Retailer 5£1,197 GBP
Retailer 17£1,328 GBP
Retailer 10£1,333 GBP
Retailer 13£1,430 GBP
Brilliant Earth£1,687 GBP

16 data points across 18 retailers

18 retailers£293 GBP to £1,687 GBP

A
Cheapest Retailer
-
£293 GBP
$393 USD
A
Retailer 2
-
£328 GBP
$440 USD
View
Final sale: no returns
Retailer 3
-
£364 GBP
$488 USD
View
Price last confirmed 7 days ago
Retailer 4
-
£377 GBP
View
Price last confirmed 15 days ago
A
Retailer 5
-
£474 GBP
$635 USD
View
A
Retailer 6
-
£537 GBP
$719 USD
View
B+
Retailer 7
-
£578 GBP
$775 USD
View
A
Retailer 8
-
£584 GBP
€745 EUR
View
B+
Retailer 9
-
£597 GBP
View
B+
Retailer 10
-
£611 GBP
$819 USD
View
B+
Retailer 11
-
£626 GBP
ZAR 13,540 ZAR
View
B+
Retailer 12
-
£875 GBP
$1,172 USD
View
B
Retailer 13
-
£1,159 GBP
SGD 2,098 SGD
View
B
Retailer 14
-
£1,197 GBP
$1,604 USD
View
Retailer 15
-
£1,328 GBP
$1,780 USD
View
Price last confirmed 13 days ago
B
Retailer 16
-
£1,333 GBP
$1,786 USD
View
B
Retailer 17
-
£1,430 GBP
View
Most Expensive
B
Brilliant Earth
21861679A · Oct 31
£1,687 GBP
$2,260 USD
View
17 more retailers have this diamond
Prices start from £293 GBPSave up to £1,393 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
£293 GBP