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Cushion|Lab Grown|IGI

1.03ct D FL Cushion Lab Grown Diamond

ID • D/FL • IGI LG811638340

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG811638340

Diamond specifications and retailer prices

From £291 GBP
As of October 30, 2026
Save £1,537 GBP (84%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: £1,829 GBP at Do Amore Diamonds · As of October 31, 2026
View at Do Amore Diamonds

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 LG811638340 or 811638340. Listed at 8 retailers as of October 30, 2026, with prices from £291 to £1,829, a £1,537 spread on the same certified stone. Do Amore Diamonds lists it at £1,829. 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 angle34.7°
Pavilion angle39.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG811638340
Dimensions7.43 × 5.06 × 3.41 mm
L/W Ratio1.47
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
7.43 mm5.06 mm1.03 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG811638340
Side View
Table 65.0%Crown 34.7°Girdle: STK-VTKPavilion 39.3°Culet: NoneDepth 67.4%

Caratlytics Score

How it works →
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: £1,829 GBP|Low: £239 GBP|High: £2,440 GBP|Avg: £874 GBP|-11.2%
Do Amore Diamonds
Retailer 2
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Retailer 15
October 31, 2026
Retailer 15£239 GBP
Retailer 3£266 GBP
Retailer 10£291 GBP
Retailer 2£410 GBP
Retailer 9£422 GBP
Retailer 4£488 GBP
Retailer 13£666 GBP
Retailer 7£741 GBP
Retailer 12£816 GBP
Retailer 14£995 GBP
Retailer 6£1,020 GBP
Retailer 11£1,148 GBP
Retailer 8£1,149 GBP
Retailer 5£1,356 GBP
Do Amore Diamonds£1,829 GBP

29 data points across 15 retailers

8 retailers£291 GBP to £1,829 GBP

A+
Cheapest Retailer
-
£291 GBP
A
Retailer 2
-
£410 GBP
$550 USD
View
A
Retailer 3
-
£422 GBP
$566 USD
View
B+
Retailer 4
-
£816 GBP
$1,094 USD
View
Retailer 5
-
£995 GBP
$1,333 USD
View
Price last confirmed 72 days ago
B+
Retailer 6
-
£1,148 GBP
View
B+
Retailer 7
-
£1,149 GBP
$1,540 USD
View
Most Expensive
B
Do Amore Diamonds
27-45180F932 · Oct 31
£1,829 GBP
$2,450 USD
View
7 more retailers have this diamond
Prices start from £291 GBPSave up to £1,537 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
£291 GBP