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Cushion|Lab Grown|IGI

1.83ct D IF Cushion Lab Grown Diamond

ID • D/IF • IGI LG836639794

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG836639794

Diamond specifications and retailer prices

From £433 GBP
As of October 30, 2026
Save £2,373 GBP (85%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £2,806 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 IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG836639794 or 836639794. Listed at 15 retailers as of October 30, 2026, with prices from £433 to £2,806, a £2,373 spread on the same certified stone. Brilliant Earth lists it at £2,806. 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
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.2°
Pavilion angle40°
OriginLab Grown
Grading LabIGI
CertificateIGI LG836639794
Dimensions7.99 × 6.51 × 4.49 mm
L/W Ratio1.23
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
7.99 mm6.51 mm1.83 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG836639794
Side View
Table 62.0%Crown 33.2°Girdle: STK-THKPavilion 40°Culet: NoneDepth 69.0%

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: £2,806 GBP|Low: £432 GBP|High: £3,239 GBP|Avg: £1,441 GBP|-13.4%
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 30, 2026
Retailer 2£433 GBP
Retailer 14£493 GBP
Retailer 4£530 GBP
Retailer 16£587 GBP
Retailer 13£618 GBP
Retailer 11£639 GBP
Retailer 5£866 GBP
Retailer 10£950 GBP
Retailer 17£1,089 GBP
Retailer 12£1,507 GBP
Retailer 9£1,652 GBP
Retailer 8£1,947 GBP
Retailer 6£2,364 GBP
Retailer 3£2,440 GBP
Retailer 7£2,579 GBP
Retailer 15£2,649 GBP
Brilliant Earth£2,806 GBP

35 data points across 17 retailers

15 retailers£433 GBP to £2,806 GBP

A
Cheapest Retailer
-
£433 GBP
A
Retailer 2
-
£493 GBP
$661 USD
View
A
Retailer 3
-
£530 GBP
$710 USD
View
A
Retailer 4
-
£556 GBP
$745 USD
View
A
Retailer 5
-
£587 GBP
$786 USD
View
A
Retailer 6
-
£639 GBP
€816 EUR
View
A
Retailer 7
-
£866 GBP
$1,161 USD
View
A
Retailer 8
-
£950 GBP
A$1,959 AUD
View
A
Retailer 9
-
£1,089 GBP
$1,459 USD
View
B+
Retailer 10
-
£1,507 GBP
View
Retailer 11
-
£2,364 GBP
A$4,873 AUD
View
Price last confirmed 22 days ago
Retailer 12
-
£2,440 GBP
$3,270 USD
View
Price last confirmed 9 days ago
B
Retailer 13
-
£2,579 GBP
$3,455 USD
View
B
Retailer 14
-
£2,649 GBP
$3,550 USD
View
Most Expensive
B
Brilliant Earth
21581090Y · Oct 30
£2,806 GBP
$3,760 USD
View
14 more retailers have this diamond
Prices start from £433 GBPSave up to £2,373 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
£433 GBP