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Asscher|Lab Grown|IGI

1.78ct D FL Asscher Lab Grown Diamond

ID • D/FL • IGI LG836614453

Shape and cutting style on the report: Square emerald cut

Certificate IGI LG836614453

Diamond specifications and retailer prices

From £344 GBP
$458 USD
As of October 27, 2026
Save £3,929 GBP (92%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: £4,273 GBP at Brilliant Earth · As of October 28, 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 D colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG836614453 or 836614453. Listed at 22 retailers as of October 27, 2026, with prices from £344 to £4,273, a £3,929 spread on the same certified stone. Brilliant Earth lists it at £4,273. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.78
Carat
D
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.7°
Pavilion angle38.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG836614453
Dimensions6.82 × 6.82 × 4.22 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
6.82 mm6.82 mm1.78 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG836614453
Side View
Table 67.0%Crown 33.7°Girdle: Slightly ThickPavilion 38.8°Culet: NoneDepth 61.9%

Caratlytics Score

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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 27
Current: £4,273 GBP|Low: £344 GBP|High: £4,288 GBP|Avg: £1,319 GBP|-0.4%
Brilliant Earth
Retailer 2
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Retailer 22
October 30, 2026
Retailer 11£344 GBP
Retailer 8£385 GBP
Retailer 3£427 GBP
Retailer 2£452 GBP
Retailer 9£500 GBP
Retailer 19£533 GBP
Retailer 15£556 GBP
Retailer 5£612 GBP
Retailer 22£667 GBP
Retailer 13£705 GBP
Retailer 18£733 GBP
Retailer 16£878 GBP
Retailer 6£1,060 GBP
Retailer 21£1,146 GBP
Retailer 4£1,370 GBP
Retailer 7£1,394 GBP
Retailer 20£1,487 GBP
Retailer 17£1,575 GBP
Retailer 14£1,728 GBP
Retailer 10£2,548 GBP
Retailer 12£2,951 GBP
Brilliant Earth£4,273 GBP

23 data points across 22 retailers

22 retailers£344 GBP to £4,273 GBP

A
Cheapest Retailer
-
£344 GBP
$458 USD
A
Retailer 2
-
£385 GBP
$513 USD
View
A
Retailer 3
-
£427 GBP
$568 USD
View
A
Retailer 4
-
£452 GBP
View
A
Retailer 5
-
£500 GBP
$666 USD
View
Final sale: no returns
A
Retailer 6
-
£533 GBP
$710 USD
View
Retailer 7
-
£556 GBP
$740 USD
View
Price last confirmed 13 days ago
A
Retailer 8
-
£612 GBP
$815 USD
View
A
Retailer 9
-
£667 GBP
$888 USD
View
A
Retailer 10
-
£705 GBP
View
A
Retailer 11
-
£733 GBP
ZAR 15,764 ZAR
View
A
Retailer 12
-
£878 GBP
€1,114 EUR
View
B+
Retailer 13
-
£1,060 GBP
$1,411 USD
View
B+
Retailer 14
-
£1,146 GBP
$1,526 USD
View
B+
Retailer 15
-
£1,370 GBP
$1,825 USD
View
B+
Retailer 16
-
£1,394 GBP
$1,856 USD
View
B+
Retailer 17
-
£1,487 GBP
$1,980 USD
View
B+
Retailer 18
-
£1,575 GBP
View
Retailer 19
-
£1,728 GBP
View
Price last confirmed 8 days ago
B
Retailer 20
-
£2,548 GBP
$3,393 USD
View
Retailer 21
-
£2,951 GBP
$3,930 USD
View
Price last confirmed 8 days ago
Most Expensive
B
Brilliant Earth
21738548A · Oct 28
£4,273 GBP
$5,690 USD
View
21 more retailers have this diamond
Prices start from £344 GBPSave up to £3,929 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
£344 GBP