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Cushion|Lab Grown|IGI

1.83ct G SI1 Cushion Lab Grown Diamond

GD • G/SI1 • IGI LG538289862

Shape and cutting style on the report: Square cushion brilliant

Certificate IGI LG538289862

Diamond specifications and retailer prices

From £273 GBP
$366 USD
As of November 1, 2026
Save £939 GBP (77%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £1,212 GBP at MOH London · As of October 26, 2026
View at MOH London

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 G colour (near-colourless) and SI1 clarity (slightly-included), with a standard cut grade and certified by IGI LG538289862 or 538289862. Listed at 10 retailers as of October 26, 2026, with prices from £273 to £1,212, a £939 spread on the same certified stone. MOH London lists it at £1,212. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.83
Carat
G
Colour
SI1
Clarity
Good
Cut

Specifications

CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle40.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG538289862
Dimensions7.77 × 7.53 × 4.58 mm
L/W Ratio1.03
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
7.77 mm7.53 mm1.83 ctG / SI1
OriginLab Grown
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG538289862
Side View
Table 64.5%Crown 35.5°Girdle: MED-STKPavilion 40.7°Culet: NoneDepth 60.8%

Caratlytics Score

How it works →
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: Nov 1
Current: £1,212 GBP|Low: £195 GBP|High: £1,537 GBP|Avg: £661 GBP|-0.9%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 2, 2026
Retailer 8£273 GBP
Retailer 6£302 GBP
Retailer 3£455 GBP
Retailer 7£489 GBP
Retailer 2£540 GBP
Retailer 9£559 GBP
Retailer 5£780 GBP
Retailer 4£940 GBP
MOH London£1,212 GBP

40 data points across 9 retailers

10 retailers£273 GBP to £1,212 GBP

A
Cheapest Retailer
-
£273 GBP
$366 USD
Final sale: no returns
Retailer 2
-
£302 GBP
$405 USD
View
Price last confirmed 22 days ago
B+
Retailer 3
-
£455 GBP
$610 USD
View
B+
Retailer 4
-
£489 GBP
$655 USD
View
B+
Retailer 5
-
£528 GBP
$707 USD
View
B+
Retailer 6
-
£540 GBP
View
B+
Retailer 7
-
£559 GBP
$749 USD
View
B
Retailer 8
-
£780 GBP
$1,045 USD
View
B
Retailer 9
-
£940 GBP
$1,260 USD
View
Most Expensive
B
MOH London
LG538289862 · Oct 26
£1,212 GBP
View
9 more retailers have this diamond
Prices start from £273 GBPSave up to £939 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
£273 GBP