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Cushion|Lab Grown|IGI

4.23ct D FL Cushion Lab Grown Diamond

ID • D/FL • IGI LG804660084

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG804660084

Diamond specifications and retailer prices

From £3,054 GBP
$4,092 USD
As of October 30, 2026
Save £16,007 GBP (84%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £19,061 GBP at Do Amore Diamonds · As of October 31, 2026
View at Do Amore Diamonds

About this 4.23ct lab-grown cushion diamond

This 4.23ct lab-grown cushion 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 LG804660084 or 804660084. Listed at 10 retailers as of October 30, 2026, with prices from £3,054 to £19,061, a £16,007 spread on the same certified stone. Do Amore Diamonds lists it at £19,061. 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

4.23
Carat
D
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.6°
Pavilion angle38°
OriginLab Grown
Grading LabIGI
CertificateIGI LG804660084
Dimensions10.89 × 8.44 × 5.71 mm
L/W Ratio1.29
Girdle conditionFaceted
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
10.89 mm8.44 mm4.23 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG804660084
Side View
Table 58.0%Crown 35.6°Girdle: STK-THKPavilion 38°Culet: NoneDepth 67.7%

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 30
Current: £19,061 GBP|Low: £3,054 GBP|High: £24,412 GBP|Avg: £8,189 GBP|-21.9%
Do Amore Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 30, 2026
Retailer 2£3,054 GBP
Retailer 6£3,329 GBP
Retailer 4£3,498 GBP
Retailer 10£4,218 GBP
Retailer 8£5,015 GBP
Retailer 5£6,126 GBP
Retailer 9£6,247 GBP
Retailer 7£7,639 GBP
Retailer 3£9,784 GBP
Do Amore Diamonds£19,061 GBP

26 data points across 10 retailers

10 retailers£3,054 GBP to £19,061 GBP

A+
Cheapest Retailer
-
£3,054 GBP
$4,092 USD
A
Retailer 2
-
£3,329 GBP
$4,460 USD
View
A
Retailer 3
-
£3,498 GBP
$4,687 USD
View
A
Retailer 4
-
£4,218 GBP
$5,652 USD
View
Final sale: no returns
A
Retailer 5
-
£5,015 GBP
$6,719 USD
View
A
Retailer 6
-
£6,126 GBP
€7,817 EUR
View
Retailer 7
-
£6,247 GBP
$8,370 USD
View
Price last confirmed 23 days ago
B+
Retailer 8
-
£7,639 GBP
View
B+
Retailer 9
-
£9,784 GBP
$13,110 USD
View
Most Expensive
B
Do Amore Diamonds
27-D159B11CE · Oct 31
£19,061 GBP
$25,540 USD
View
9 more retailers have this diamond
Prices start from £3,054 GBPSave up to £16,007 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+
4.23ct Cushion
£3,054 GBP