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Cushion|Lab Grown|IGI

4.30ct D FL Cushion Lab Grown Diamond

ID • D/FL • IGI LG811635496

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG811635496

Diamond specifications and retailer prices

From £3,095 GBP
$4,122 USD
As of October 29, 2026
Save £16,384 GBP (84%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: £19,479 GBP at Do Amore Diamonds · As of October 30, 2026
View at Do Amore Diamonds

About this 4.3ct lab-grown cushion diamond

This 4.3ct 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 LG811635496 or 811635496. Listed at 9 retailers as of October 29, 2026, with prices from £3,095 to £19,479, a £16,384 spread on the same certified stone. Do Amore Diamonds lists it at £19,479. 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

4.30
Carat
D
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.6°
Pavilion angle35.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG811635496
Dimensions11.06 × 8.70 × 5.64 mm
L/W Ratio1.27
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
11.06 mm8.70 mm4.30 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG811635496
Side View
Table 59.0%Crown 32.6°Girdle: MED-THKPavilion 35.3°Culet: NoneDepth 64.8%

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 29
Current: £19,479 GBP|Low: £3,095 GBP|High: £24,953 GBP|Avg: £9,037 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 7£3,095 GBP
Retailer 4£3,330 GBP
Retailer 2£3,625 GBP
Retailer 6£5,124 GBP
Retailer 3£6,265 GBP
Retailer 9£6,557 GBP
Retailer 5£7,546 GBP
Retailer 10£10,543 GBP
Retailer 8£16,956 GBP
Do Amore Diamonds£19,479 GBP

26 data points across 10 retailers

9 retailers£3,095 GBP to £19,479 GBP

A+
Cheapest Retailer
-
£3,095 GBP
$4,122 USD
A
Retailer 2
-
£3,330 GBP
$4,435 USD
View
A
Retailer 3
-
£3,625 GBP
$4,827 USD
View
A
Retailer 4
-
£5,124 GBP
$6,824 USD
View
A
Retailer 5
-
£6,265 GBP
€7,946 EUR
View
Retailer 6
-
£6,557 GBP
$8,732 USD
View
Price last confirmed 81 days ago
B+
Retailer 7
-
£7,546 GBP
View
B
Retailer 8
-
£16,956 GBP
$22,580 USD
View
Most Expensive
B
Do Amore Diamonds
27-90FA6433D · Oct 30
£19,479 GBP
$25,940 USD
View
8 more retailers have this diamond
Prices start from £3,095 GBPSave up to £16,384 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+
4.30ct Cushion
£3,095 GBP