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Cushion|Lab Grown|IGI

1.55ct D FL Cushion Lab Grown Diamond

ID • D/FL • IGI LG846662367

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG846662367

Diamond specifications and retailer prices

From £492 GBP
As of November 2, 2026
Save £2,668 GBP (84%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £3,160 GBP at Brilliant Earth · As of November 2, 2026
View at Brilliant Earth

About this 1.55ct lab-grown cushion diamond

This 1.55ct lab-grown cushion sits in the one-and-a-half to two carat band, graded D colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG846662367 or 846662367. Listed at 10 retailers as of November 2, 2026, with prices from £492 to £3,160, a £2,668 spread on the same certified stone. Brilliant Earth lists it at £3,160. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.55
Carat
D
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle29.3°
Pavilion angle35.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG846662367
Dimensions9.06 × 5.72 × 3.72 mm
L/W Ratio1.58
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
9.06 mm5.72 mm1.55 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG846662367
Side View
Table 60.0%Crown 29.3°Girdle: STK-VTKPavilion 35.2°Culet: NoneDepth 65.0%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 2
Current: £3,160 GBP|Low: £492 GBP|High: £3,219 GBP|Avg: £1,433 GBP|-1.9%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 2, 2026
Retailer 3£492 GBP
Retailer 5£565 GBP
Retailer 4£721 GBP
Retailer 9£771 GBP
Retailer 6£869 GBP
Retailer 2£1,293 GBP
Retailer 7£1,583 GBP
Retailer 10£2,053 GBP
Retailer 8£2,595 GBP
Brilliant Earth£3,160 GBP

16 data points across 10 retailers

10 retailers£492 GBP to £3,160 GBP

A
Cheapest Retailer
-
£492 GBP
A
Retailer 2
-
£565 GBP
$758 USD
View
A
Retailer 3
-
£721 GBP
$968 USD
View
A
Retailer 4
-
£771 GBP
$1,035 USD
View
A
Retailer 5
-
£869 GBP
$1,166 USD
View
B+
Retailer 6
-
£1,293 GBP
€1,652 EUR
View
B+
Retailer 7
-
£1,583 GBP
$2,124 USD
View
Retailer 8
-
£2,053 GBP
$2,755 USD
View
Price last confirmed 12 days ago
B
Retailer 9
-
£2,595 GBP
View
Most Expensive
B
Brilliant Earth
22155278A · Nov 2
£3,160 GBP
$4,240 USD
View
9 more retailers have this diamond
Prices start from £492 GBPSave up to £2,668 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
1.55ct Cushion
£492 GBP