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Asscher|Lab Grown|IGI

4.20ct D FL Asscher Lab Grown Diamond

ID • D/FL • IGI LG628448082

Shape and cutting style on the report: Square emerald cut

Certificate IGI LG628448082

Diamond specifications and retailer prices

From £3,567 GBP
$4,780 USD
As of October 27, 2026
Save £19,852 GBP (85%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £23,420 GBP at Do Amore Diamonds · As of October 30, 2026
View at Do Amore Diamonds

About this 4.2ct lab-grown asscher diamond

This 4.2ct 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 LG628448082 or 628448082. Listed at 15 retailers as of October 27, 2026, with prices from £3,567 to £23,420, a £19,852 spread on the same certified stone. Do Amore Diamonds lists it at £23,420. 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

4.20
Carat
D
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle30.8°
Pavilion angle34.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG628448082
Dimensions9.17 × 8.89 × 5.68 mm
L/W Ratio1.03
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
9.17 mm8.89 mm4.20 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG628448082
Side View
Table 59.0%Crown 30.8°Girdle: MediumPavilion 34.6°Culet: NoneDepth 63.9%

Caratlytics Score

How it works →
A+
Exceptional
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 27
Current: £23,420 GBP|Low: £3,404 GBP|High: £31,734 GBP|Avg: £8,877 GBP|-26.2%
Do Amore Diamonds
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 31, 2026
Retailer 5£3,567 GBP
Retailer 11£3,726 GBP
Retailer 8£3,967 GBP
Retailer 9£3,971 GBP
Retailer 3£3,978 GBP
Retailer 4£5,174 GBP
Retailer 2£5,421 GBP
Retailer 7£5,429 GBP
Retailer 15£6,108 GBP
Retailer 6£6,441 GBP
Retailer 13£7,572 GBP
Retailer 14£8,916 GBP
Retailer 10£10,575 GBP
Retailer 12£11,954 GBP
Do Amore Diamonds£23,420 GBP

34 data points across 15 retailers

15 retailers£3,567 GBP to £23,420 GBP

A+
Cheapest Retailer
-
£3,567 GBP
$4,780 USD
A
Retailer 2
-
£3,726 GBP
$4,993 USD
View
A
Retailer 3
-
£3,967 GBP
$5,315 USD
View
A
Retailer 4
-
£3,971 GBP
$5,321 USD
View
A
Retailer 5
-
£3,978 GBP
$5,330 USD
View
A
Retailer 6
-
£5,174 GBP
$6,933 USD
View
A
Retailer 7
-
£5,421 GBP
$7,263 USD
View
A
Retailer 8
-
£5,429 GBP
$7,274 USD
View
Final sale: no returns
A
Retailer 9
-
£6,108 GBP
$8,184 USD
View
Retailer 10
-
£6,441 GBP
$8,630 USD
View
Price last confirmed 12 days ago
B+
Retailer 11
-
£7,572 GBP
€9,662 EUR
View
B+
Retailer 12
-
£8,916 GBP
View
B+
Retailer 13
-
£10,575 GBP
$14,170 USD
View
B+
Retailer 14
-
£11,954 GBP
$16,016 USD
View
Most Expensive
B
Do Amore Diamonds
27-F8A9A95E6 · Oct 30
£23,420 GBP
$31,380 USD
View
14 more retailers have this diamond
Prices start from £3,567 GBPSave up to £19,852 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+
4.20ct Asscher
£3,567 GBP