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Cushion|Lab Grown|IGI

1.83ct D IF Cushion Lab Grown Diamond

EX • D/IF • IGI LG683520322

Shape and cutting style on the report: Cushion brilliant

Certificate IGI LG683520322

Diamond specifications and retailer prices

From £330 GBP
$442 USD
As of October 30, 2026
Save £2,476 GBP (88%) vs most expensive(unlock to see where)
21 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 LG683520322 or 683520322. Listed at 21 retailers as of October 30, 2026, with prices from £330 to £2,806, a £2,476 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
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.2°
Pavilion angle40.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG683520322
Dimensions8.77 × 6.41 × 4.28 mm
L/W Ratio1.37
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
8.77 mm6.41 mm1.83 ctD / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG683520322
Side View
Table 59.0%Crown 32.2°Girdle: MED-STKPavilion 40.5°Culet: NoneDepth 66.8%

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: £330 GBP|High: £3,948 GBP|Avg: £1,284 GBP|-28.9%
Brilliant Earth
Retailer 2
Retailer 3
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Retailer 12
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Retailer 20
October 31, 2026
Retailer 9£330 GBP
Retailer 3£430 GBP
Retailer 18£497 GBP
Retailer 12£523 GBP
Retailer 16£526 GBP
Retailer 4£558 GBP
Retailer 13£581 GBP
Retailer 2£668 GBP
Retailer 15£695 GBP
Retailer 20£853 GBP
Retailer 14£942 GBP
Retailer 8£1,183 GBP
Retailer 6£1,351 GBP
Retailer 7£1,371 GBP
Retailer 11£1,412 GBP
Retailer 10£1,436 GBP
Retailer 17£1,487 GBP
Retailer 19£2,437 GBP
Retailer 5£2,627 GBP
Brilliant Earth£2,806 GBP

42 data points across 20 retailers

21 retailers£330 GBP to £2,806 GBP

A
Cheapest Retailer
-
£330 GBP
$442 USD
Final sale: no returns
Retailer 2
-
£430 GBP
View
Price last confirmed 14 days ago
A
Retailer 3
-
£497 GBP
HK$5,200 HKD
View
Retailer 4
-
£523 GBP
$701 USD
View
Price last confirmed 19 days ago
A
Retailer 5
-
£526 GBP
$705 USD
View
A
Retailer 6
-
£558 GBP
$747 USD
View
A
Retailer 7
-
£581 GBP
$779 USD
View
A
Retailer 8
-
£668 GBP
View
A
Retailer 9
-
£695 GBP
ZAR 15,043 ZAR
View
A
Retailer 10
-
£853 GBP
$1,143 USD
View
A
Retailer 11
-
£942 GBP
A$1,941 AUD
View
A
Retailer 12
-
£1,183 GBP
View
B+
Retailer 13
-
£1,351 GBP
$1,810 USD
View
B+
Retailer 14
-
£1,371 GBP
$1,837 USD
View
B+
Retailer 15
-
£1,412 GBP
$1,892 USD
View
B+
Retailer 16
-
£1,436 GBP
SGD 2,601 SGD
View
B+
Retailer 17
-
£1,487 GBP
View
Retailer 18
-
£2,437 GBP
$3,265 USD
View
Price last confirmed 10 days ago
B
Retailer 19
-
£2,521 GBP
View
B
Retailer 20
-
£2,627 GBP
$3,520 USD
View
Most Expensive
B
Brilliant Earth
20467239Y · Oct 30
£2,806 GBP
$3,760 USD
View
20 more retailers have this diamond
Prices start from £330 GBPSave up to £2,476 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
£330 GBP