CaratHunter
Plans
Cushion|Lab Grown|IGI

1.83ct D FL Cushion Lab Grown Diamond

ID • D/FL • IGI LG816616093

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

Certificate IGI LG816616093

Diamond specifications and retailer prices

From £502 GBP
$672 USD
As of October 31, 2026
Save £2,558 GBP (84%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: £3,060 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 LG816616093 or 816616093. Listed at 17 retailers as of October 30, 2026, with prices from £502 to £3,060, a £2,558 spread on the same certified stone. Brilliant Earth lists it at £3,060. 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 angle35.7°
Pavilion angle34.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG816616093
Dimensions6.95 × 6.88 × 4.56 mm
L/W Ratio1.01
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
6.95 mm6.88 mm1.83 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG816616093
Side View
Table 62.0%Crown 35.7°Girdle: STK-THKPavilion 34.6°Culet: NoneDepth 66.3%

Caratlytics Score

How it works →
A
Excellent
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 31
Current: £3,060 GBP|Low: £502 GBP|High: £4,373 GBP|Avg: £1,584 GBP|-30.0%
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 2£502 GBP
Retailer 9£548 GBP
Retailer 15£642 GBP
Retailer 5£852 GBP
Retailer 10£870 GBP
Retailer 14£955 GBP
Retailer 12£957 GBP
Retailer 16£1,142 GBP
Retailer 6£1,202 GBP
Retailer 4£1,615 GBP
Retailer 17£1,797 GBP
Retailer 11£1,896 GBP
Retailer 7£1,975 GBP
Retailer 3£2,085 GBP
Retailer 13£2,426 GBP
Retailer 8£2,649 GBP
Brilliant Earth£3,060 GBP

30 data points across 17 retailers

17 retailers£502 GBP to £3,060 GBP

A
Cheapest Retailer
-
£502 GBP
$672 USD
Final sale: no returns
Retailer 2
-
£548 GBP
$734 USD
View
Price last confirmed 15 days ago
A
Retailer 3
-
£642 GBP
$860 USD
View
A
Retailer 4
-
£852 GBP
$1,142 USD
View
A
Retailer 5
-
£870 GBP
View
A
Retailer 6
-
£955 GBP
ZAR 20,676 ZAR
View
A
Retailer 7
-
£957 GBP
€1,221 EUR
View
A
Retailer 8
-
£1,142 GBP
$1,530 USD
View
A
Retailer 9
-
£1,202 GBP
$1,610 USD
View
B+
Retailer 10
-
£1,615 GBP
View
B+
Retailer 11
-
£1,797 GBP
$2,408 USD
View
B+
Retailer 12
-
£1,896 GBP
$2,540 USD
View
B+
Retailer 13
-
£1,975 GBP
SGD 3,576 SGD
View
B+
Retailer 14
-
£2,085 GBP
$2,794 USD
View
B
Retailer 15
-
£2,426 GBP
View
Retailer 16
-
£2,649 GBP
$3,550 USD
View
Price last confirmed 10 days ago
Most Expensive
B
Brilliant Earth
21421165A · Oct 30
£3,060 GBP
$4,100 USD
View
16 more retailers have this diamond
Prices start from £502 GBPSave up to £2,558 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
£502 GBP