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Cushion|Lab Grown|IGI

1.65ct F VS1 Cushion Lab Grown Diamond

VG • F/VS1 • IGI LG673406023

Shape and cutting style on the report: Cushion mixed cut

Certificate IGI LG673406023

Diamond specifications and retailer prices

From £438 GBP
$588 USD
As of November 1, 2026
Save £1,591 GBP (78%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £2,029 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 VS1 clarity (very-slightly-included), with a very-good cut grade and certified by IGI LG673406023 or 673406023. Listed at 15 retailers as of November 1, 2026, with prices from £438 to £2,029, a £1,591 spread on the same certified stone. MOH London lists it at £2,029. 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
VS1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle42.6°
Pavilion angle43.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG673406023
Dimensions8.54 × 6.07 × 3.94 mm
L/W Ratio1.41
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
8.54 mm6.07 mm1.65 ctF / VS1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI LG673406023
Side View
Table 66.0%Crown 42.6°Girdle: STK-VTKPavilion 43.9°Culet: NoneDepth 64.9%

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: Nov 1
Current: £2,029 GBP|Low: £438 GBP|High: £2,054 GBP|Avg: £980 GBP
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 2, 2026
Retailer 6£438 GBP
Retailer 9£486 GBP
Retailer 7£522 GBP
Retailer 11£654 GBP
Retailer 10£753 GBP
Retailer 4£754 GBP
Retailer 2£838 GBP
Retailer 5£905 GBP
Retailer 3£1,420 GBP
Retailer 8£1,702 GBP
MOH London£2,029 GBP

44 data points across 11 retailers

15 retailers£438 GBP to £2,029 GBP

A
Cheapest Retailer
-
£438 GBP
$588 USD
Final sale: no returns
Retailer 2
-
£486 GBP
$652 USD
View
Price last confirmed 17 days ago
B+
Retailer 3
-
£521 GBP
$699 USD
View
A
Retailer 4
-
£522 GBP
$700 USD
View
B+
Retailer 5
-
£654 GBP
$877 USD
View
B+
Retailer 6
-
£753 GBP
$1,011 USD
View
B+
Retailer 7
-
£754 GBP
View
B
Retailer 8
-
£838 GBP
ZAR 18,177 ZAR
View
Retailer 9
-
£905 GBP
$1,215 USD
View
Price last confirmed 14 days ago
B
Retailer 10
-
£1,420 GBP
View
B
Retailer 11
-
£1,580 GBP
$2,120 USD
View
B
Retailer 12
-
£1,665 GBP
$2,234 USD
View
B
Retailer 13
-
£1,702 GBP
$2,284 USD
View
B
Retailer 14
-
£1,803 GBP
$2,420 USD
View
Most Expensive
B
MOH London
LG673406023 · Nov 1
£2,029 GBP
View
14 more retailers have this diamond
Prices start from £438 GBPSave up to £1,591 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
1.65ct Cushion
£438 GBP