Asscher|Lab Grown|IGI

4.25ct D FL Asscher Lab Grown Diamond

EX • D/FL • IGI LG831604049

Shape and cutting style on the report: Square emerald cut

Certificate IGI LG831604049

Diamond specifications and retailer prices

From £3,860 GBP
As of October 30, 2026
Save £13,673 GBP (78%) vs most expensive(unlock to see where)
25 retailers carry this diamond
Most expensive: £17,533 GBP at With Clarity · As of October 30, 2026
View at With Clarity

About this 4.25ct lab-grown asscher diamond

This 4.25ct 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 LG831604049 or 831604049. Listed at 25 retailers as of October 30, 2026, with prices from £3,860 to £17,533, a £13,673 spread on the same certified stone. With Clarity lists it at £17,533. 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

4.25
Carat
D
Colour
FL
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32°
Pavilion angle40.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG831604049
Dimensions9.14 × 9.07 × 5.76 mm
L/W Ratio1.01
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
9.14 mm9.07 mm4.25 ctD / FL
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG831604049
Side View
Table 62.0%Crown 32°Girdle: MediumPavilion 40.3°Culet: NoneDepth 63.5%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 30
Current: £5,569 GBP|Low: £3,847 GBP|High: £16,718 GBP|Avg: £7,617 GBP|+0.7%
Retailer 1
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
October 30, 2026
Retailer 9£3,860 GBP
Retailer 6£3,983 GBP
Retailer 5£4,174 GBP
Retailer 7£4,621 GBP
Retailer 3£5,091 GBP
Retailer 1£5,569 GBP
Retailer 10£5,923 GBP
Retailer 4£6,732 GBP
Retailer 15£6,910 GBP
Retailer 12£7,594 GBP
Retailer 13£9,452 GBP
Retailer 11£9,834 GBP
Retailer 8£10,702 GBP
Retailer 2£11,103 GBP
Retailer 14£16,009 GBP

28 data points across 15 retailers

25 retailers£3,860 GBP to £17,533 GBP

A
Cheapest Retailer
-
£3,860 GBP
A
Retailer 2
-
£3,983 GBP
$5,337 USD
View
A
Retailer 3
-
£4,174 GBP
$5,593 USD
View
A
Retailer 4
-
£4,238 GBP
$5,679 USD
View
A
Retailer 5
-
£4,461 GBP
$5,977 USD
View
Final sale: no returns
A
Retailer 6
-
£4,621 GBP
$6,191 USD
View
Retailer 7
-
£4,621 GBP
$6,191 USD
View
Price last confirmed 14 days ago
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Retailer 8
-
£4,631 GBP
$6,205 USD
View
A
Retailer 9
-
£4,927 GBP
$6,601 USD
View
A
Retailer 10
-
£5,091 GBP
$6,821 USD
View
A
Retailer 11
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£5,485 GBP
$7,349 USD
View
A
Retailer 12
-
£5,569 GBP
HK$58,300 HKD
View
A
Retailer 13
-
£5,923 GBP
View
B+
Retailer 14
-
£6,551 GBP
View
Retailer 15
-
£6,732 GBP
$9,020 USD
View
Price last confirmed 12 days ago
B+
Retailer 16
-
£6,910 GBP
$9,258 USD
View
B+
Retailer 17
-
£7,594 GBP
€9,690 EUR
View
B+
Retailer 18
-
£9,452 GBP
View
B+
Retailer 19
-
£9,834 GBP
ZAR 212,860 ZAR
View
B+
Retailer 20
-
£10,702 GBP
$14,340 USD
View
B
Retailer 21
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£11,103 GBP
$14,877 USD
View
B
Retailer 22
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£12,849 GBP
$17,216 USD
View
B
Retailer 23
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£16,009 GBP
SGD 28,987 SGD
View
B
Retailer 24
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£16,438 GBP
$22,025 USD
View
Most Expensive
B
With Clarity
831604049 · Oct 30
£17,533 GBP
$23,492 USD
View
24 more retailers have this diamond
Prices start from £3,860 GBPSave up to £13,673 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
4.25ct Asscher
£3,860 GBP