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Cushion|Lab Grown|IGI

1.55ct D FL Cushion Lab Grown Diamond

EX • D/FL • IGI LG800677588

Shape and cutting style on the report: Square cushion modified brilliant

Certificate IGI LG800677588

Diamond specifications and retailer prices

From £566 GBP
$760 USD
As of November 3, 2026
Save £2,824 GBP (83%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £3,391 GBP at Do Amore Diamonds · As of November 3, 2026
View at Do Amore Diamonds

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 LG800677588 or 800677588. Listed at 10 retailers as of November 3, 2026, with prices from £566 to £3,391, a £2,824 spread on the same certified stone. Do Amore Diamonds lists it at £3,391. 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
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.8°
Pavilion angle38°
OriginLab Grown
Grading LabIGI
CertificateIGI LG800677588
Dimensions6.91 × 6.71 × 4.43 mm
L/W Ratio1.03
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
6.91 mm6.71 mm1.55 ctD / FL
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG800677588
Side View
Table 62.0%Crown 34.8°Girdle: STK-THKPavilion 38°Culet: NoneDepth 66.0%

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 3
Current: £3,391 GBP|Low: £566 GBP|High: £4,479 GBP|Avg: £1,718 GBP|-24.3%
Do Amore Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 1, 2026
Retailer 9£566 GBP
Retailer 7£572 GBP
Retailer 11£593 GBP
Retailer 10£670 GBP
Retailer 6£735 GBP
Retailer 4£838 GBP
Retailer 8£2,023 GBP
Retailer 2£2,269 GBP
Retailer 3£2,621 GBP
Retailer 5£2,623 GBP
Do Amore Diamonds£3,391 GBP

26 data points across 11 retailers

10 retailers£566 GBP to £3,391 GBP

A
Cheapest Retailer
-
£566 GBP
$760 USD
A
Retailer 2
-
£572 GBP
$768 USD
View
A
Retailer 3
-
£593 GBP
$796 USD
View
Final sale: no returns
A
Retailer 4
-
£670 GBP
$899 USD
View
A
Retailer 5
-
£735 GBP
$986 USD
View
A
Retailer 6
-
£838 GBP
€1,071 EUR
View
Retailer 7
-
£2,023 GBP
$2,715 USD
View
Price last confirmed 12 days ago
B+
Retailer 8
-
£2,269 GBP
View
B
Retailer 9
-
£2,623 GBP
$3,520 USD
View
Most Expensive
B
Do Amore Diamonds
27-2D5802C62 · Nov 3
£3,391 GBP
$4,550 USD
View
9 more retailers have this diamond
Prices start from £566 GBPSave up to £2,824 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
£566 GBP