CaratHunter
Plans
Asscher|Lab Grown|IGI

1.00ct D FL Asscher Lab Grown Diamond

ID • D/FL • IGI LG811641221

Shape and cutting style on the report: Square emerald cut

Certificate IGI LG811641221

Diamond specifications and retailer prices

From £258 GBP
$346 USD
As of October 30, 2026
Save £1,720 GBP (87%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: £1,978 GBP at Brilliant Earth · As of October 30, 2026
View at Brilliant Earth

About this 1ct lab-grown asscher diamond

This 1ct 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 LG811641221 or 811641221. Listed at 21 retailers as of October 30, 2026, with prices from £258 to £1,978, a £1,720 spread on the same certified stone. Brilliant Earth lists it at £1,978. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.00
Carat
D
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.3°
Pavilion angle41.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG811641221
Dimensions5.48 × 5.48 × 3.65 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
5.48 mm5.48 mm1.00 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG811641221
Side View
Table 64.0%Crown 35.3°Girdle: MED-STKPavilion 41.1°Culet: NoneDepth 66.6%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: £1,978 GBP|Low: £258 GBP|High: £1,985 GBP|Avg: £745 GBP|-0.4%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
October 31, 2026
Retailer 3£258 GBP
Retailer 11£295 GBP
Retailer 8£337 GBP
Retailer 15£431 GBP
Retailer 9£433 GBP
Retailer 12£465 GBP
Retailer 5£466 GBP
Retailer 13£491 GBP
Retailer 2£509 GBP
Retailer 16£643 GBP
Retailer 10£878 GBP
Retailer 7£952 GBP
Retailer 6£953 GBP
Retailer 4£1,147 GBP
Retailer 14£1,150 GBP
Brilliant Earth£1,978 GBP

39 data points across 16 retailers

21 retailers£258 GBP to £1,978 GBP

A
Cheapest Retailer
-
£258 GBP
$346 USD
Final sale: no returns
Retailer 2
-
£272 GBP
$364 USD
View
Price last confirmed 23 days ago
A
Retailer 3
-
£295 GBP
View
Retailer 4
-
£315 GBP
$422 USD
View
Price last confirmed 36 days ago
Retailer 5
-
£332 GBP
$445 USD
View
Price last confirmed 36 days ago
Retailer 6
-
£337 GBP
$451 USD
View
Price last confirmed 28 days ago
Retailer 7
-
£337 GBP
$451 USD
View
Price last confirmed 19 days ago
A
Retailer 8
-
£431 GBP
$578 USD
View
A
Retailer 9
-
£433 GBP
$580 USD
View
A
Retailer 10
-
£465 GBP
€594 EUR
View
A
Retailer 11
-
£466 GBP
$624 USD
View
A
Retailer 12
-
£491 GBP
ZAR 10,629 ZAR
View
B+
Retailer 13
-
£509 GBP
View
B+
Retailer 14
-
£643 GBP
$861 USD
View
B+
Retailer 15
-
£878 GBP
$1,176 USD
View
Retailer 16
-
£952 GBP
$1,275 USD
View
Price last confirmed 12 days ago
B
Retailer 17
-
£953 GBP
$1,277 USD
View
Retailer 18
-
£1,081 GBP
$1,449 USD
View
Price last confirmed 30 days ago
B+
Retailer 19
-
£1,147 GBP
View
B
Retailer 20
-
£1,150 GBP
$1,541 USD
View
Most Expensive
B
Brilliant Earth
21015967A · Oct 30
£1,978 GBP
$2,650 USD
View
20 more retailers have this diamond
Prices start from £258 GBPSave up to £1,720 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
1.00ct Asscher
£258 GBP