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Cushion|Lab Grown|IGI

1.65ct F SI2 Cushion Lab Grown Diamond

VG • F/SI2 • IGI LG530226714

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

Certificate IGI LG530226714

Diamond specifications and retailer prices

From £413 GBP
$553 USD
As of November 1, 2026
Save £689 GBP (63%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: £1,101 GBP at MOH London · As of November 1, 2026
View at MOH London

About this 1.65ct lab-grown cushion diamond

This 1.65ct lab-grown cushion sits in the one-and-a-half to two carat band, graded F colour (colourless) and SI2 clarity (slightly-included), with a very-good cut grade and certified by IGI LG530226714 or 530226714. Listed at 7 retailers as of November 1, 2026, with prices from £413 to £1,101, a £689 spread on the same certified stone. MOH London lists it at £1,101. 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

1.65
Carat
F
Colour
SI2
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle38.2°
Pavilion angle39.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG530226714
Dimensions6.70 × 6.64 × 4.60 mm
L/W Ratio1.01
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
6.70 mm6.64 mm1.65 ctF / SI2
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG530226714
Side View
Table 62.0%Crown 38.2°Girdle: STK-VTKPavilion 39.2°Culet: NoneDepth 69.3%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: £1,101 GBP|Low: £196 GBP|High: £1,107 GBP|Avg: £622 GBP|+27.6%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 2, 2026
Retailer 4£249 GBP
Retailer 5£413 GBP
Retailer 2£487 GBP
Retailer 6£659 GBP
Retailer 3£713 GBP
Retailer 7£887 GBP
MOH London£1,101 GBP

31 data points across 7 retailers

7 retailers£413 GBP to £1,101 GBP

Retailer 1
-
£249 GBP
$334 USD
Price last confirmed 7 days ago
B+
Retailer 2
-
£413 GBP
$553 USD
View
B+
Retailer 3
-
£487 GBP
View
B
Retailer 4
-
£659 GBP
$883 USD
View
Retailer 5
-
£713 GBP
$955 USD
View
Price last confirmed 11 days ago
B
Retailer 6
-
£887 GBP
$1,188 USD
View
Most Expensive
C
MOH London
LG530226714 · Nov 1
£1,101 GBP
View
6 more retailers have this diamond
Prices start from £413 GBPSave up to £689 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.

B+
1.65ct Cushion
£413 GBP