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Cushion|Lab Grown|IGI

1.03ct D FL Cushion Lab Grown Diamond

ID • D/FL • IGI LG816614864

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG816614864

Diamond specifications and retailer prices

From £298 GBP
As of October 29, 2026
Save £1,697 GBP (85%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: £1,994 GBP at Brilliant Earth · As of October 28, 2026
View at Brilliant Earth

About this 1.03ct lab-grown cushion diamond

This 1.03ct 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 LG816614864 or 816614864. Listed at 9 retailers as of October 28, 2026, with prices from £298 to £1,994, a £1,697 spread on the same certified stone. Brilliant Earth lists it at £1,994. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.03
Carat
D
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.3°
Pavilion angle35.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG816614864
Dimensions7.44 × 5.00 × 3.31 mm
L/W Ratio1.49
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
7.44 mm5.00 mm1.03 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG816614864
Side View
Table 64.0%Crown 33.3°Girdle: STK-THKPavilion 35.6°Culet: NoneDepth 66.2%

Caratlytics Score

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A+
Exceptional
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 29
Current: £1,994 GBP|Low: £241 GBP|High: £2,468 GBP|Avg: £882 GBP|-19.2%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
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Retailer 15
October 29, 2026
Retailer 14£241 GBP
Retailer 3£269 GBP
Retailer 8£298 GBP
Retailer 11£430 GBP
Retailer 13£455 GBP
Retailer 5£492 GBP
Retailer 15£672 GBP
Retailer 7£747 GBP
Retailer 12£779 GBP
Retailer 10£823 GBP
Retailer 4£1,003 GBP
Retailer 2£1,157 GBP
Retailer 6£1,368 GBP
Retailer 9£1,866 GBP
Brilliant Earth£1,994 GBP

28 data points across 15 retailers

9 retailers£298 GBP to £1,994 GBP

A+
Cheapest Retailer
-
£298 GBP
A
Retailer 2
-
£430 GBP
$571 USD
View
A
Retailer 3
-
£455 GBP
$605 USD
View
B+
Retailer 4
-
£779 GBP
$1,035 USD
View
B+
Retailer 5
-
£823 GBP
$1,094 USD
View
B+
Retailer 6
-
£1,003 GBP
$1,333 USD
View
Price last confirmed 70 days ago
B+
Retailer 7
-
£1,157 GBP
View
B
Retailer 8
-
£1,866 GBP
$2,480 USD
View
Most Expensive
B
Brilliant Earth
21596068Y · Oct 28
£1,994 GBP
$2,650 USD
View
8 more retailers have this diamond
Prices start from £298 GBPSave up to £1,697 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+
1.03ct Cushion
£298 GBP