CaratHunter
Plans
Cushion|Lab Grown|IGI

1.65ct F VS1 Cushion Lab Grown Diamond

ID • F/VS1 • IGI LG816636331

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG816636331

Diamond specifications and retailer prices

From £220 GBP
As of November 2, 2026
Save £660 GBP (75%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: £880 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 top-tier cut grade and certified by IGI LG816636331 or 816636331. Listed at 9 retailers as of November 1, 2026, with prices from £220 to £880, a £660 spread on the same certified stone. MOH London lists it at £880. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.65
Carat
F
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.7°
Pavilion angle35.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG816636331
Dimensions8.46 × 5.93 × 4.05 mm
L/W Ratio1.43
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
8.46 mm5.93 mm1.65 ctF / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG816636331
Side View
Table 61.0%Crown 35.7°Girdle: MED-THKPavilion 35.4°Culet: NoneDepth 68.3%

Caratlytics Score

How it works →
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: Nov 2
Current: £880 GBP|Low: £220 GBP|High: £884 GBP|Avg: £623 GBP|+6.7%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 2, 2026
Retailer 3£220 GBP
Retailer 4£317 GBP
Retailer 2£439 GBP
Retailer 8£440 GBP
Retailer 7£697 GBP
Retailer 6£778 GBP
Retailer 9£790 GBP
Retailer 5£806 GBP
MOH London£880 GBP

34 data points across 9 retailers

9 retailers£220 GBP to £880 GBP

A
Cheapest Retailer
-
£220 GBP
A
Retailer 2
-
£317 GBP
€405 EUR
View
A
Retailer 3
-
£439 GBP
A$904 AUD
View
A
Retailer 4
-
£440 GBP
$589 USD
View
B+
Retailer 5
-
£697 GBP
$934 USD
View
B+
Retailer 6
-
£778 GBP
$1,042 USD
View
Retailer 7
-
£790 GBP
SGD 1,430 SGD
View
Price last confirmed 20 days ago
B+
Retailer 8
-
£806 GBP
$1,080 USD
View
Most Expensive
B
MOH London
LG816636331 · Nov 1
£880 GBP
View
8 more retailers have this diamond
Prices start from £220 GBPSave up to £660 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
£220 GBP