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Asscher|Lab Grown|IGI

4.09ct D FL Asscher Lab Grown Diamond

ID • D/FL • IGI LG780663837

Shape and cutting style on the report: Square emerald cut

Certificate IGI LG780663837

Diamond specifications and retailer prices

From £3,447 GBP
$4,619 USD
As of October 31, 2026
Save £13,921 GBP (80%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £17,369 GBP at Taylor and Hart · As of October 30, 2026
View at Taylor and Hart

About this 4.09ct lab-grown asscher diamond

This 4.09ct lab-grown asscher sits in the three to five carat band, graded D colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG780663837 or 780663837. Listed at 11 retailers as of October 30, 2026, with prices from £3,447 to £17,369, a £13,921 spread on the same certified stone. Taylor and Hart lists it at £17,369. Lab-grown prices in the 2ct and up range have fallen 40 to 60% over the last 18 months. Use the cross-retailer spread above to find the lowest current listing.

The 4Cs

4.09
Carat
D
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle29.4°
Pavilion angle42.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG780663837
Dimensions8.77 × 8.77 × 5.76 mm
L/W Ratio1.00
Culet sizePointed
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
8.77 mm8.77 mm4.09 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG780663837
Side View
Table 62.0%Crown 29.4°Girdle: MED-STKPavilion 42.5°Culet: NoneDepth 65.7%

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 31
Current: £6,343 GBP|Low: £3,447 GBP|High: £25,075 GBP|Avg: £10,940 GBP|-18.4%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Taylor and Hart
October 31, 2026
Retailer 10£3,447 GBP
Retailer 8£4,107 GBP
Retailer 2£6,305 GBP
Retailer 1£6,343 GBP
Retailer 7£6,396 GBP
Retailer 11£7,669 GBP
Retailer 5£8,192 GBP
Retailer 6£10,099 GBP
Retailer 4£10,456 GBP
Retailer 9£13,431 GBP
Taylor and Hart£17,369 GBP
Retailer 3£25,075 GBP

38 data points across 12 retailers

11 retailers£3,447 GBP to £17,369 GBP

A
Cheapest Retailer
-
£3,447 GBP
$4,619 USD
A
Retailer 2
-
£4,107 GBP
$5,503 USD
View
A
Retailer 3
-
£6,305 GBP
HK$66,000 HKD
View
A
Retailer 4
-
£6,343 GBP
View
Retailer 5
-
£6,396 GBP
$8,570 USD
View
Price last confirmed 12 days ago
B+
Retailer 6
-
£7,669 GBP
$10,275 USD
View
B+
Retailer 7
-
£8,192 GBP
€10,454 EUR
View
B+
Retailer 8
-
£10,099 GBP
View
B+
Retailer 9
-
£10,456 GBP
$14,010 USD
View
B+
Retailer 10
-
£13,431 GBP
$17,996 USD
View
Most Expensive
B
Taylor and Hart
584E526 · Oct 30
£17,369 GBP
$23,272 USD
View
10 more retailers have this diamond
Prices start from £3,447 GBPSave up to £13,921 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
4.09ct Asscher
£3,447 GBP