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Cushion|Lab Grown|IGI

1.83ct D FL Cushion Lab Grown Diamond

ID • D/FL • IGI LG846662376

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG846662376

Diamond specifications and retailer prices

From £589 GBP
As of October 30, 2026
Save £2,941 GBP (83%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £3,530 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 LG846662376 or 846662376. Listed at 10 retailers as of October 30, 2026, with prices from £589 to £3,530, a £2,941 spread on the same certified stone. Brilliant Earth lists it at £3,530. 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
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.4°
Pavilion angle36.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG846662376
Dimensions8.93 × 6.27 × 4.06 mm
L/W Ratio1.42
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
8.93 mm6.27 mm1.83 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG846662376
Side View
Table 62.0%Crown 34.4°Girdle: MED-THKPavilion 36.8°Culet: NoneDepth 64.8%

Caratlytics Score

How it works →
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: £3,530 GBP|Low: £589 GBP|High: £5,869 GBP|Avg: £2,229 GBP|-19.6%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 31, 2026
Retailer 5£589 GBP
Retailer 6£852 GBP
Retailer 9£911 GBP
Retailer 3£1,175 GBP
Retailer 7£1,535 GBP
Retailer 4£1,928 GBP
Retailer 2£2,041 GBP
Retailer 10£2,661 GBP
Retailer 8£2,761 GBP
Brilliant Earth£3,530 GBP

13 data points across 10 retailers

10 retailers£589 GBP to £3,530 GBP

A
Cheapest Retailer
-
£589 GBP
A
Retailer 2
-
£852 GBP
$1,142 USD
View
A
Retailer 3
-
£911 GBP
$1,220 USD
View
A
Retailer 4
-
£1,175 GBP
$1,575 USD
View
B+
Retailer 5
-
£1,535 GBP
€1,959 EUR
View
B+
Retailer 6
-
£1,928 GBP
$2,583 USD
View
B+
Retailer 7
-
£2,041 GBP
$2,735 USD
View
Retailer 8
-
£2,661 GBP
$3,565 USD
View
Price last confirmed 10 days ago
B+
Retailer 9
-
£2,761 GBP
View
Most Expensive
B
Brilliant Earth
22154883A · Oct 30
£3,530 GBP
$4,730 USD
View
9 more retailers have this diamond
Prices start from £589 GBPSave up to £2,941 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
£589 GBP