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Asscher|Lab Grown|IGI

4.08ct F SI1 Asscher Lab Grown Diamond

ID • F/SI1 • IGI LG645483471

Shape and cutting style on the report: Square emerald cut

Certificate IGI LG645483471

Diamond specifications and retailer prices

From £335 GBP
$449 USD
As of October 30, 2026
Save £1,564 GBP (82%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £1,899 GBP at Rare Carat · As of November 1, 2026
View at Rare Carat

About this 4.08ct lab-grown asscher diamond

This 4.08ct lab-grown asscher sits in the three to five carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG645483471 or 645483471. Listed at 14 retailers as of October 30, 2026, with prices from £335 to £1,899, a £1,564 spread on the same certified stone. Rare Carat lists it at £1,899. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

4.08
Carat
F
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle39.9°
Pavilion angle40.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG645483471
Dimensions8.83 × 8.80 × 5.85 mm
L/W Ratio1.00
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
8.83 mm8.80 mm4.08 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG645483471
Side View
Table 66.0%Crown 39.9°Girdle: MediumPavilion 40.4°Culet: NoneDepth 66.5%

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 30
Current: £1,899 GBP|Low: £335 GBP|High: £4,918 GBP|Avg: £1,359 GBP|-32.3%
Rare Carat
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
November 1, 2026
Retailer 5£335 GBP
Retailer 2£358 GBP
Retailer 4£375 GBP
Retailer 11£415 GBP
Retailer 15£459 GBP
Retailer 12£522 GBP
Retailer 3£652 GBP
Retailer 14£672 GBP
Retailer 9£687 GBP
Retailer 6£932 GBP
Retailer 10£1,117 GBP
Retailer 16£1,335 GBP
Retailer 13£1,534 GBP
Rare Carat£1,899 GBP
Retailer 8£3,370 GBP
Retailer 7£4,918 GBP

6 data points across 16 retailers

14 retailers£335 GBP to £1,899 GBP

A
Cheapest Retailer
-
£335 GBP
$449 USD
A
Retailer 2
-
£358 GBP
View
A
Retailer 3
-
£375 GBP
$503 USD
View
A
Retailer 4
-
£415 GBP
$556 USD
View
A
Retailer 5
-
£459 GBP
HK$4,800 HKD
View
A
Retailer 6
-
£522 GBP
$700 USD
View
B+
Retailer 7
-
£652 GBP
$873 USD
View
A
Retailer 8
-
£672 GBP
$901 USD
View
A
Retailer 9
-
£687 GBP
View
B+
Retailer 10
-
£1,117 GBP
$1,496 USD
View
B+
Retailer 11
-
£1,335 GBP
$1,789 USD
View
B+
Retailer 12
-
£1,534 GBP
View
B+
Retailer 13
-
£1,560 GBP
View
Most Expensive
B
Rare Carat
KI4714834KF645 · Nov 1
£1,899 GBP
$2,545 USD
View
13 more retailers have this diamond
Prices start from £335 GBPSave up to £1,564 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
4.08ct Asscher
£335 GBP