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Cushion|Lab Grown|IGI

4.27ct D FL Cushion Lab Grown Diamond

ID • D/FL • IGI LG768628622

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG768628622

Diamond specifications and retailer prices

From £3,278 GBP
$4,392 USD
As of October 30, 2026
Save £10,275 GBP (76%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £13,553 GBP at Taylor and Hart · As of October 30, 2026
View at Taylor and Hart

About this 4.27ct lab-grown cushion diamond

This 4.27ct 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 LG768628622 or 768628622. Listed at 13 retailers as of October 30, 2026, with prices from £3,278 to £13,553, a £10,275 spread on the same certified stone. Taylor and Hart lists it at £13,553. 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

4.27
Carat
D
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.5°
Pavilion angle36.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG768628622
Dimensions10.69 × 8.87 × 5.85 mm
L/W Ratio1.21
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
10.69 mm8.87 mm4.27 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG768628622
Side View
Table 59.0%Crown 34.5°Girdle: MED-STKPavilion 36.3°Culet: NoneDepth 66.0%

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: £6,199 GBP|Low: £3,278 GBP|High: £16,740 GBP|Avg: £8,214 GBP|-26.7%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Taylor and Hart
October 31, 2026
Retailer 6£3,278 GBP
Retailer 5£3,494 GBP
Retailer 11£4,805 GBP
Retailer 9£4,927 GBP
Retailer 3£6,086 GBP
Retailer 1£6,199 GBP
Retailer 4£6,411 GBP
Retailer 7£6,499 GBP
Retailer 10£8,087 GBP
Retailer 12£8,436 GBP
Retailer 8£9,874 GBP
Retailer 2£10,937 GBP
Taylor and Hart£13,553 GBP

38 data points across 13 retailers

13 retailers£3,278 GBP to £13,553 GBP

A+
Cheapest Retailer
-
£3,278 GBP
$4,392 USD
A
Retailer 2
-
£3,494 GBP
$4,681 USD
View
A
Retailer 3
-
£4,805 GBP
HK$50,300 HKD
View
A
Retailer 4
-
£4,927 GBP
View
Retailer 5
-
£6,086 GBP
$8,155 USD
View
Price last confirmed 12 days ago
A
Retailer 6
-
£6,199 GBP
€7,911 EUR
View
B+
Retailer 7
-
£6,411 GBP
$8,590 USD
View
A
Retailer 8
-
£6,499 GBP
$8,708 USD
View
B+
Retailer 9
-
£8,087 GBP
ZAR 175,056 ZAR
View
B+
Retailer 10
-
£8,436 GBP
View
B+
Retailer 11
-
£9,874 GBP
$13,230 USD
View
B+
Retailer 12
-
£10,937 GBP
$14,655 USD
View
Most Expensive
B+
Taylor and Hart
33Y7CCX · Oct 30
£13,553 GBP
$18,160 USD
View
12 more retailers have this diamond
Prices start from £3,278 GBPSave up to £10,275 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+
4.27ct Cushion
£3,278 GBP