CaratHunter
Plans
Asscher|Lab Grown|IGI

1.78ct E FL Asscher Lab Grown Diamond

ID • E/FL • IGI LG840634914

Shape and cutting style on the report: Square emerald cut

Certificate IGI LG840634914

Diamond specifications and retailer prices

From £433 GBP
As of October 30, 2026
Save £2,533 GBP (85%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: £2,966 GBP at Brilliant Earth · As of October 30, 2026
View at Brilliant Earth

About this 1.78ct lab-grown asscher diamond

This 1.78ct lab-grown asscher sits in the one-and-a-half to two carat band, graded E colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG840634914 or 840634914. Listed at 16 retailers as of October 30, 2026, with prices from £433 to £2,966, a £2,533 spread on the same certified stone. Brilliant Earth lists it at £2,966. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.78
Carat
E
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.7°
Pavilion angle40°
OriginLab Grown
Grading LabIGI
CertificateIGI LG840634914
Dimensions6.77 × 6.66 × 4.39 mm
L/W Ratio1.02
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
6.77 mm6.66 mm1.78 ctE / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG840634914
Side View
Table 60.0%Crown 33.7°Girdle: MED-STKPavilion 40°Culet: NoneDepth 65.9%

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: £2,966 GBP|Low: £432 GBP|High: £3,852 GBP|Avg: £1,422 GBP|-23.0%
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 30, 2026
Retailer 2£433 GBP
Retailer 5£493 GBP
Retailer 13£526 GBP
Retailer 16£657 GBP
Retailer 9£693 GBP
Retailer 12£720 GBP
Retailer 10£867 GBP
Retailer 3£1,065 GBP
Retailer 15£1,126 GBP
Retailer 4£1,371 GBP
Retailer 14£1,459 GBP
Retailer 11£1,548 GBP
Retailer 6£1,795 GBP
Retailer 7£2,513 GBP
Retailer 8£2,947 GBP
Brilliant Earth£2,966 GBP

14 data points across 16 retailers

16 retailers£433 GBP to £2,966 GBP

A
Cheapest Retailer
-
£433 GBP
A
Retailer 2
-
£493 GBP
$657 USD
View
Final sale: no returns
A
Retailer 3
-
£526 GBP
$700 USD
View
A
Retailer 4
-
£657 GBP
$875 USD
View
A
Retailer 5
-
£693 GBP
View
A
Retailer 6
-
£720 GBP
ZAR 15,494 ZAR
View
A
Retailer 7
-
£867 GBP
€1,100 EUR
View
B+
Retailer 8
-
£1,065 GBP
$1,418 USD
View
B+
Retailer 9
-
£1,126 GBP
$1,500 USD
View
B+
Retailer 10
-
£1,371 GBP
$1,826 USD
View
B+
Retailer 11
-
£1,459 GBP
$1,943 USD
View
B+
Retailer 12
-
£1,548 GBP
View
B
Retailer 13
-
£1,795 GBP
SGD 3,230 SGD
View
B
Retailer 14
-
£2,513 GBP
$3,347 USD
View
Retailer 15
-
£2,947 GBP
$3,925 USD
View
Price last confirmed 9 days ago
Most Expensive
B
Brilliant Earth
21861713A · Oct 30
£2,966 GBP
$3,950 USD
View
15 more retailers have this diamond
Prices start from £433 GBPSave up to £2,533 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
1.78ct Asscher
£433 GBP