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Cushion|Lab Grown|IGI

1.02ct D FL Cushion Lab Grown Diamond

ID • D/FL • IGI LG818659238

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG818659238

Diamond specifications and retailer prices

From £306 GBP
$410 USD
As of October 26, 2026
Save £1,396 GBP (82%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £1,702 GBP at Brilliant Earth · As of October 30, 2026
View at Brilliant Earth

About this 1.02ct lab-grown cushion diamond

This 1.02ct lab-grown cushion sits in the classic one-carat band, graded D colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG818659238 or 818659238. Listed at 14 retailers as of October 26, 2026, with prices from £306 to £1,702, a £1,396 spread on the same certified stone. Brilliant Earth lists it at £1,702. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.02
Carat
D
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.5°
Pavilion angle35.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG818659238
Dimensions7.14 × 5.01 × 3.58 mm
L/W Ratio1.43
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
7.14 mm5.01 mm1.02 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG818659238
Side View
Table 60.0%Crown 33.5°Girdle: THK-VTKPavilion 35.4°Culet: NoneDepth 71.5%

Caratlytics Score

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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: Oct 26
Current: £1,702 GBP|Low: £306 GBP|High: £1,985 GBP|Avg: £835 GBP|-14.3%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
October 30, 2026
Retailer 13£306 GBP
Retailer 10£340 GBP
Retailer 12£460 GBP
Retailer 9£463 GBP
Retailer 7£541 GBP
Retailer 3£543 GBP
Retailer 8£584 GBP
Retailer 2£614 GBP
Retailer 4£849 GBP
Retailer 5£900 GBP
Retailer 6£1,015 GBP
Retailer 14£1,123 GBP
Retailer 11£1,330 GBP
Brilliant Earth£1,702 GBP

42 data points across 14 retailers

14 retailers£306 GBP to £1,702 GBP

A
Cheapest Retailer
-
£306 GBP
$410 USD
Final sale: no returns
A
Retailer 2
-
£340 GBP
$456 USD
View
A
Retailer 3
-
£460 GBP
$617 USD
View
A
Retailer 4
-
£463 GBP
$620 USD
View
A
Retailer 5
-
£541 GBP
€691 EUR
View
A
Retailer 6
-
£543 GBP
$728 USD
View
A
Retailer 7
-
£584 GBP
ZAR 12,647 ZAR
View
A
Retailer 8
-
£614 GBP
View
B+
Retailer 9
-
£849 GBP
$1,137 USD
View
B+
Retailer 10
-
£900 GBP
SGD 1,630 SGD
View
Retailer 11
-
£1,015 GBP
$1,360 USD
View
Price last confirmed 12 days ago
B+
Retailer 12
-
£1,123 GBP
$1,504 USD
View
B+
Retailer 13
-
£1,330 GBP
View
Most Expensive
B
Brilliant Earth
21421114A · Oct 30
£1,702 GBP
$2,280 USD
View
13 more retailers have this diamond
Prices start from £306 GBPSave up to £1,396 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
1.02ct Cushion
£306 GBP