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Cushion|Lab Grown|IGI

4.30ct D FL Cushion Lab Grown Diamond

ID • D/FL • IGI LG780662157

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG780662157

Diamond specifications and retailer prices

From £3,095 GBP
$4,122 USD
As of October 29, 2026
Save £16,519 GBP (84%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £19,614 GBP at Do Amore Diamonds · As of October 28, 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 LG780662157 or 780662157. Listed at 11 retailers as of October 28, 2026, with prices from £3,095 to £19,614, a £16,519 spread on the same certified stone. Do Amore Diamonds lists it at £19,614. 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 angle35.5°
Pavilion angle35.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG780662157
Dimensions10.59 × 8.55 × 5.87 mm
L/W Ratio1.24
Girdle conditionFaceted
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
10.59 mm8.55 mm4.30 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG780662157
Side View
Table 57.0%Crown 35.5°Girdle: STK-THKPavilion 35.7°Culet: NoneDepth 68.7%

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 29
Current: £19,614 GBP|Low: £3,095 GBP|High: £24,953 GBP|Avg: £9,626 GBP|-21.4%
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
October 29, 2026
Retailer 8£3,095 GBP
Retailer 5£3,176 GBP
Retailer 10£3,630 GBP
Retailer 12£4,312 GBP
Retailer 7£5,124 GBP
Retailer 2£6,048 GBP
Retailer 3£6,544 GBP
Retailer 9£7,567 GBP
Retailer 6£8,719 GBP
Retailer 11£16,956 GBP
Do Amore Diamonds£19,614 GBP
Retailer 4£20,796 GBP

27 data points across 12 retailers

11 retailers£3,095 GBP to £19,614 GBP

A+
Cheapest Retailer
-
£3,095 GBP
$4,122 USD
A
Retailer 2
-
£3,176 GBP
$4,230 USD
View
A
Retailer 3
-
£3,630 GBP
$4,834 USD
View
A
Retailer 4
-
£4,312 GBP
$5,742 USD
View
Final sale: no returns
A
Retailer 5
-
£5,124 GBP
$6,824 USD
View
A
Retailer 6
-
£6,048 GBP
€7,671 EUR
View
Retailer 7
-
£6,544 GBP
$8,715 USD
View
Price last confirmed 81 days ago
B+
Retailer 8
-
£7,567 GBP
View
B+
Retailer 9
-
£8,719 GBP
$11,612 USD
View
B
Retailer 10
-
£16,956 GBP
$22,580 USD
View
Most Expensive
B
Do Amore Diamonds
27-446F75BE7 · Oct 28
£19,614 GBP
$26,120 USD
View
10 more retailers have this diamond
Prices start from £3,095 GBPSave up to £16,519 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