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Cushion|Lab Grown|IGI

1.83ct D IF Cushion Lab Grown Diamond

EX • D/IF • IGI LG770669255

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG770669255

Diamond specifications and retailer prices

From £610 GBP
$817 USD
As of October 30, 2026
Save £837 GBP (58%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £2,523 GBP at Rare Carat · As of October 21, 2026
View at Rare Carat

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 LG770669255 or 770669255. Listed at 12 retailers as of October 30, 2026, with a 137% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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 angle33.7°
Pavilion angle36.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG770669255
Dimensions6.37 × 6.37 × 8.60 mm
L/W Ratio1.00
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
6.37 mm6.37 mm1.83 ctD / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG770669255
Side View
Table 61.0%Crown 33.7°Girdle: MED-STKPavilion 36.9°Culet: NoneDepth 68.0%

Caratlytics Score

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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 30
Current: £2,523 GBP|Low: £610 GBP|High: £2,672 GBP|Avg: £1,345 GBP|-5.6%
Rare Carat
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 30, 2026
Retailer 11£610 GBP
Retailer 4£619 GBP
Retailer 9£631 GBP
Retailer 2£636 GBP
Retailer 5£664 GBP
Retailer 10£1,095 GBP
Retailer 8£1,267 GBP
Retailer 6£1,421 GBP
Retailer 7£1,446 GBP
Retailer 3£2,364 GBP
Rare Carat£2,523 GBP

44 data points across 11 retailers

12 retailers£610 GBP to £1,446 GBP

A
Cheapest Retailer
-
£610 GBP
$817 USD
A
Retailer 2
-
£619 GBP
€790 EUR
View
A
Retailer 3
-
£631 GBP
$846 USD
View
A
Retailer 4
-
£636 GBP
View
A
Retailer 5
-
£664 GBP
ZAR 14,373 ZAR
View
A
Retailer 6
-
£1,095 GBP
$1,467 USD
View
A
Retailer 7
-
£1,267 GBP
$1,698 USD
View
A
Retailer 8
-
£1,347 GBP
$1,805 USD
View
B+
Retailer 9
-
£1,421 GBP
View
B+
Retailer 10
-
£1,446 GBP
$1,938 USD
View
Retailer 11
-
£2,364 GBP
A$4,873 AUD
View
Price last confirmed 23 days ago
Most Expensive
Rare Carat
LB448 · Oct 21
£2,523 GBP
$3,380 USD
View
Price last confirmed 9 days ago
11 more retailers have this diamond
Prices start from £610 GBPSave up to £837 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
£610 GBP