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Cushion|Lab Grown|IGI

1.03ct D FL Cushion Lab Grown Diamond

ID • D/FL • IGI LG830624141

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

Certificate IGI LG830624141

Diamond specifications and retailer prices

From £254 GBP
$340 USD
As of October 30, 2026
Save £918 GBP (78%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: £1,172 GBP at Brilliant Earth · As of October 30, 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 LG830624141 or 830624141. Listed at 17 retailers as of October 30, 2026, with prices from £254 to £1,172, a £918 spread on the same certified stone. Brilliant Earth lists it at £1,172. 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 angle33.7°
Pavilion angle38.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG830624141
Dimensions6.02 × 6.00 × 3.81 mm
L/W Ratio1.00
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
6.02 mm6.00 mm1.03 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG830624141
Side View
Table 57.0%Crown 33.7°Girdle: STK-THKPavilion 38.7°Culet: NoneDepth 63.5%

Caratlytics Score

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A+
Exceptional
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: £1,172 GBP|Low: £254 GBP|High: £2,000 GBP|Avg: £725 GBP|-41.4%
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
Retailer 15
Retailer 16
Retailer 17
October 31, 2026
Retailer 17£254 GBP
Retailer 15£281 GBP
Retailer 11£290 GBP
Retailer 14£425 GBP
Retailer 2£450 GBP
Retailer 16£450 GBP
Retailer 6£459 GBP
Retailer 4£460 GBP
Retailer 13£482 GBP
Retailer 10£494 GBP
Retailer 7£722 GBP
Retailer 8£759 GBP
Retailer 5£937 GBP
Retailer 3£1,021 GBP
Retailer 9£1,022 GBP
Retailer 12£1,131 GBP
Brilliant Earth£1,172 GBP

28 data points across 17 retailers

17 retailers£254 GBP to £1,172 GBP

A+
Cheapest Retailer
-
£254 GBP
$340 USD
Final sale: no returns
A
Retailer 2
-
£281 GBP
$376 USD
View
A
Retailer 3
-
£290 GBP
View
A
Retailer 4
-
£425 GBP
$570 USD
View
A
Retailer 5
-
£450 GBP
€574 EUR
View
A
Retailer 6
-
£450 GBP
$603 USD
View
A
Retailer 7
-
£459 GBP
$615 USD
View
A
Retailer 8
-
£460 GBP
$616 USD
View
A
Retailer 9
-
£482 GBP
ZAR 10,437 ZAR
View
A
Retailer 10
-
£494 GBP
View
B+
Retailer 11
-
£722 GBP
$968 USD
View
B+
Retailer 12
-
£759 GBP
SGD 1,375 SGD
View
B+
Retailer 13
-
£937 GBP
$1,256 USD
View
B+
Retailer 14
-
£1,021 GBP
$1,368 USD
View
Retailer 15
-
£1,022 GBP
$1,370 USD
View
Price last confirmed 12 days ago
B+
Retailer 16
-
£1,131 GBP
View
Most Expensive
B
Brilliant Earth
21434220A · Oct 30
£1,172 GBP
$1,570 USD
View
16 more retailers have this diamond
Prices start from £254 GBPSave up to £918 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
£254 GBP