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Cushion|Lab Grown|IGI

1.83ct D IF Cushion Lab Grown Diamond

ID • D/IF • IGI LG817682190

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

Certificate IGI LG817682190

Diamond specifications and retailer prices

From £543 GBP
$727 USD
As of October 30, 2026
Save £2,234 GBP (80%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: £2,776 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 LG817682190 or 817682190. Listed at 8 retailers as of October 30, 2026, with prices from £543 to £2,776, a £2,234 spread on the same certified stone. Brilliant Earth lists it at £2,776. 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°
Pavilion angle32.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG817682190
Dimensions7.21 × 7.21 × 4.36 mm
L/W Ratio1.00
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
7.21 mm7.21 mm1.83 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG817682190
Side View
Table 58.0%Crown 33°Girdle: MED-STKPavilion 32.6°Culet: NoneDepth 60.5%

Caratlytics Score

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A+
Exceptional
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: £2,776 GBP|Low: £485 GBP|High: £4,105 GBP|Avg: £1,377 GBP|-32.4%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
October 31, 2026
Retailer 5£543 GBP
Retailer 2£556 GBP
Retailer 6£558 GBP
Retailer 8£806 GBP
Retailer 4£814 GBP
Retailer 3£857 GBP
Retailer 7£1,381 GBP
Brilliant Earth£2,776 GBP

30 data points across 8 retailers

8 retailers£543 GBP to £2,776 GBP

A+
Cheapest Retailer
-
£543 GBP
$727 USD
A
Retailer 2
-
£556 GBP
$745 USD
View
A
Retailer 3
-
£558 GBP
$748 USD
View
A
Retailer 4
-
£806 GBP
€1,029 EUR
View
A
Retailer 5
-
£814 GBP
A$1,677 AUD
View
A
Retailer 6
-
£857 GBP
$1,148 USD
View
B+
Retailer 7
-
£1,381 GBP
View
Most Expensive
B
Brilliant Earth
20711726A · Oct 30
£2,776 GBP
$3,720 USD
View
7 more retailers have this diamond
Prices start from £543 GBPSave up to £2,234 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
£543 GBP