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Cushion|Lab Grown|IGI

1.71ct F VS2 Cushion Lab Grown Diamond

ID • F/VS2 • IGI LG778667527

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

Certificate IGI LG778667527

Diamond specifications and retailer prices

From £202 GBP
$271 USD
As of November 1, 2026
Save £698 GBP (78%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £921 GBP at MOH London · As of October 21, 2026
View at MOH London

About this 1.71ct lab-grown cushion diamond

This 1.71ct lab-grown cushion sits in the one-and-a-half to two carat band, graded F colour (colourless) and VS2 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG778667527 or 778667527. Listed at 10 retailers as of November 1, 2026, with a 346% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.71
Carat
F
Colour
VS2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.8°
Pavilion angle32.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG778667527
Dimensions6.65 × 6.60 × 4.38 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
6.65 mm6.60 mm1.71 ctF / VS2
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG778667527
Side View
Table 60.0%Crown 35.8°Girdle: STK-VTKPavilion 32.1°Culet: NoneDepth 66.4%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 1
Current: £921 GBP|Low: £202 GBP|High: £983 GBP|Avg: £544 GBP|+2.6%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 2, 2026
Retailer 10£202 GBP
Retailer 8£343 GBP
Retailer 5£384 GBP
Retailer 9£392 GBP
Retailer 7£410 GBP
Retailer 2£435 GBP
Retailer 3£455 GBP
Retailer 6£774 GBP
Retailer 4£900 GBP
MOH London£921 GBP

40 data points across 10 retailers

10 retailers£202 GBP to £900 GBP

A
Cheapest Retailer
-
£202 GBP
$271 USD
Final sale: no returns
A
Retailer 2
-
£343 GBP
$460 USD
View
A
Retailer 3
-
£384 GBP
$515 USD
View
Retailer 4
-
£392 GBP
€501 EUR
View
Price last confirmed 8 days ago
A
Retailer 5
-
£410 GBP
$550 USD
View
A
Retailer 6
-
£435 GBP
View
A
Retailer 7
-
£455 GBP
$610 USD
View
B+
Retailer 8
-
£774 GBP
$1,038 USD
View
B
Retailer 9
-
£900 GBP
$1,208 USD
View
Most Expensive
MOH London
LG778667527 · Oct 21
£921 GBP
View
Price last confirmed 12 days ago
9 more retailers have this diamond
Prices start from £202 GBPSave up to £698 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
1.71ct Cushion
£202 GBP