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Cushion|Lab Grown|IGI

1.38ct D FL Cushion Lab Grown Diamond

ID • D/FL • IGI LG800676790

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

Certificate IGI LG800676790

Diamond specifications and retailer prices

From £464 GBP
$623 USD
As of November 2, 2026
Save £2,062 GBP (82%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: £2,526 GBP at Do Amore Diamonds · As of November 3, 2026
View at Do Amore Diamonds

About this 1.38ct lab-grown cushion diamond

This 1.38ct lab-grown cushion sits in the one-and-a-quarter to one-and-a-half carat band, graded D colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG800676790 or 800676790. Listed at 9 retailers as of November 2, 2026, with prices from £464 to £2,526, a £2,062 spread on the same certified stone. Do Amore Diamonds lists it at £2,526. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.38
Carat
D
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.2°
Pavilion angle38.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG800676790
Dimensions6.64 × 6.45 × 4.19 mm
L/W Ratio1.03
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
6.64 mm6.45 mm1.38 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG800676790
Side View
Table 63.0%Crown 35.2°Girdle: STK-THKPavilion 38.3°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: £2,526 GBP|Low: £350 GBP|High: £2,712 GBP|Avg: £1,080 GBP|-6.9%
Do Amore Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 1, 2026
Retailer 10£350 GBP
Retailer 6£464 GBP
Retailer 4£522 GBP
Retailer 7£563 GBP
Retailer 9£603 GBP
Retailer 3£653 GBP
Retailer 2£1,432 GBP
Retailer 8£1,509 GBP
Retailer 5£1,759 GBP
Do Amore Diamonds£2,526 GBP

24 data points across 10 retailers

9 retailers£464 GBP to £2,526 GBP

A
Cheapest Retailer
-
£464 GBP
$623 USD
A
Retailer 2
-
£522 GBP
$700 USD
View
A
Retailer 3
-
£563 GBP
$755 USD
View
A
Retailer 4
-
£603 GBP
$809 USD
View
A
Retailer 5
-
£653 GBP
€834 EUR
View
B+
Retailer 6
-
£1,432 GBP
View
B+
Retailer 7
-
£1,509 GBP
$2,025 USD
View
B+
Retailer 8
-
£1,759 GBP
$2,360 USD
View
Most Expensive
B
Do Amore Diamonds
27-0D18732B5 · Nov 3
£2,526 GBP
$3,390 USD
View
8 more retailers have this diamond
Prices start from £464 GBPSave up to £2,062 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
1.38ct Cushion
£464 GBP