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Cushion|Lab Grown|IGI

1.65ct F VS1 Cushion Lab Grown Diamond

ID • F/VS1 • IGI LG546223549

Shape and cutting style on the report: Square cushion brilliant

Certificate IGI LG546223549

Diamond specifications and retailer prices

From £263 GBP
$353 USD
As of November 1, 2026
Save £1,403 GBP (84%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £1,666 GBP at Queensmith · As of October 27, 2026
View at Queensmith

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 LG546223549 or 546223549. Listed at 15 retailers as of October 27, 2026, with prices from £263 to £1,666, a £1,403 spread on the same certified stone. Queensmith lists it at £1,666. 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 angle34.3°
Pavilion angle40.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG546223549
Dimensions7.33 × 7.24 × 4.51 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
7.33 mm7.24 mm1.65 ctF / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG546223549
Side View
Table 59.5%Crown 34.3°Girdle: Slightly ThickPavilion 40.6°Culet: NoneDepth 62.3%

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: £519 GBP|Low: £263 GBP|High: £1,230 GBP|Avg: £670 GBP|+3.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
November 2, 2026
Retailer 4£263 GBP
Retailer 11£291 GBP
Retailer 10£342 GBP
Retailer 12£440 GBP
Retailer 2£473 GBP
Retailer 6£502 GBP
Retailer 1£519 GBP
Retailer 3£543 GBP
Retailer 9£679 GBP
Retailer 8£1,118 GBP
Retailer 13£1,119 GBP
Retailer 5£1,136 GBP
Retailer 7£1,167 GBP

44 data points across 13 retailers

15 retailers£263 GBP to £1,666 GBP

A
Cheapest Retailer
-
£263 GBP
$353 USD
Final sale: no returns
Retailer 2
-
£291 GBP
$391 USD
View
Price last confirmed 17 days ago
A
Retailer 3
-
£440 GBP
$590 USD
View
A
Retailer 4
-
£467 GBP
$627 USD
View
A
Retailer 5
-
£473 GBP
$635 USD
View
A
Retailer 6
-
£502 GBP
ZAR 10,884 ZAR
View
A
Retailer 7
-
£519 GBP
View
B+
Retailer 8
-
£543 GBP
$729 USD
View
B+
Retailer 9
-
£679 GBP
A$1,401 AUD
View
B
Retailer 10
-
£970 GBP
$1,302 USD
View
B
Retailer 11
-
£1,118 GBP
$1,500 USD
View
B
Retailer 12
-
£1,119 GBP
$1,502 USD
View
Retailer 13
-
£1,136 GBP
View
Price last confirmed 26 days ago
B
Retailer 14
-
£1,167 GBP
View
Most Expensive
B
Queensmith
LG546223549 · Oct 27
£1,666 GBP
View
14 more retailers have this diamond
Prices start from £263 GBPSave up to £1,403 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
£263 GBP