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Cushion|Lab Grown|IGI

1.83ct D FL Cushion Lab Grown Diamond

EX • D/FL • IGI LG775615048

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG775615048

Diamond specifications and retailer prices

From £572 GBP
$767 USD
As of October 30, 2026
Save £3,264 GBP (85%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: £3,836 GBP at Brilliant Earth · As of October 30, 2026
View at Brilliant Earth

About this 1.83ct lab-grown cushion diamond

This 1.83ct lab-grown cushion sits in the one-and-a-half to two carat band, graded D colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG775615048 or 775615048. Listed at 18 retailers as of October 30, 2026, with prices from £572 to £3,836, a £3,264 spread on the same certified stone. Brilliant Earth lists it at £3,836. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.83
Carat
D
Colour
FL
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.7°
Pavilion angle37.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG775615048
Dimensions8.31 × 6.55 × 4.42 mm
L/W Ratio1.27
Girdle conditionFaceted
Culet sizePointed
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
8.31 mm6.55 mm1.83 ctD / FL
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG775615048
Side View
Table 61.0%Crown 33.7°Girdle: MED-STKPavilion 37.8°Culet: NoneDepth 67.5%

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 30
Current: £3,836 GBP|Low: £572 GBP|High: £4,523 GBP|Avg: £1,678 GBP|-12.6%
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 4£572 GBP
Retailer 14£688 GBP
Retailer 11£728 GBP
Retailer 16£784 GBP
Retailer 9£796 GBP
Retailer 10£951 GBP
Retailer 2£963 GBP
Retailer 5£966 GBP
Retailer 13£1,092 GBP
Retailer 17£1,164 GBP
Retailer 15£1,843 GBP
Retailer 7£2,001 GBP
Retailer 8£2,026 GBP
Retailer 3£2,049 GBP
Retailer 6£2,049 GBP
Retailer 12£2,516 GBP
Brilliant Earth£3,836 GBP

43 data points across 17 retailers

18 retailers£572 GBP to £3,836 GBP

A
Cheapest Retailer
-
£572 GBP
$767 USD
Final sale: no returns
A
Retailer 2
-
£688 GBP
HK$7,200 HKD
View
A
Retailer 3
-
£728 GBP
$975 USD
View
A
Retailer 4
-
£784 GBP
$1,050 USD
View
Retailer 5
-
£796 GBP
$1,067 USD
View
Price last confirmed 14 days ago
A
Retailer 6
-
£951 GBP
View
A
Retailer 7
-
£963 GBP
€1,229 EUR
View
A
Retailer 8
-
£966 GBP
$1,295 USD
View
A
Retailer 9
-
£1,092 GBP
ZAR 23,637 ZAR
View
A
Retailer 10
-
£1,164 GBP
$1,559 USD
View
B+
Retailer 11
-
£1,843 GBP
View
B+
Retailer 12
-
£1,923 GBP
$2,576 USD
View
B+
Retailer 13
-
£2,001 GBP
SGD 3,623 SGD
View
B+
Retailer 14
-
£2,026 GBP
$2,715 USD
View
B+
Retailer 15
-
£2,049 GBP
$2,745 USD
View
B+
Retailer 16
-
£2,049 GBP
$2,745 USD
View
B+
Retailer 17
-
£2,516 GBP
View
Most Expensive
B
Brilliant Earth
19073865A · Oct 30
£3,836 GBP
$5,140 USD
View
17 more retailers have this diamond
Prices start from £572 GBPSave up to £3,264 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
1.83ct Cushion
£572 GBP