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Cushion|Lab Grown|IGI

3.71ct F VVS1 Cushion Lab Grown Diamond

ID • F/VVS1 • IGI LG787638139

Certificate IGI LG787638139

Diamond specifications and retailer prices

From £3,904 GBP
$5,239 USD
As of October 31, 2026
Save £1,685 GBP (30%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: £5,589 GBP at Zales · As of November 2, 2026
View at Zales

About this 3.71ct lab-grown cushion diamond

This 3.71ct lab-grown cushion sits in the three to five carat band, graded F colour (colourless) and VVS1 clarity (very-very-slightly-included), with a top-tier cut grade and certified by IGI LG787638139 or 787638139. Listed at 4 retailers as of October 31, 2026, with prices from £3,904 to £5,589, a £1,685 spread on the same certified stone. Zales lists it at £5,589. Lab-grown prices in the 2ct and up range have fallen 40 to 60% over the last 18 months. Use the cross-retailer spread above to find the lowest current listing.

The 4Cs

3.71
Carat
F
Colour
VVS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginLab Grown
Grading LabIGI
CertificateIGI LG787638139
Dimensions9.23 × 8.96 × 6.14 mm
L/W Ratio1.03
Top View
9.23 mm8.96 mm3.71 ctF / VVS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG787638139
Side View
Table 62.0%CrownGirdle: MED-STKPavilionCulet: NoneDepth 68.5%

Caratlytics Score

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B
Good
Decent quality, room for better deals
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 31
Current: £3,904 GBP|Low: £3,904 GBP|High: £5,589 GBP|Avg: £5,048 GBP
Retailer 1
Retailer 2
Retailer 3
Zales
September 26, 2026
Retailer 1£3,904 GBP
Retailer 3£4,657 GBP
Retailer 2£5,589 GBP
Zales£5,589 GBP

4 data points across 4 retailers

4 retailers£3,904 GBP to £5,589 GBP

B
Cheapest Retailer
-
£3,904 GBP
$5,239 USD
B
Retailer 2
-
£4,657 GBP
$6,250 USD
View
B
Retailer 3
-
£5,589 GBP
$7,500 USD
View
Most Expensive
B
Zales
528302523 · Nov 2
£5,589 GBP
$7,500 USD
View
3 more retailers have this diamond
Prices start from £3,904 GBPSave up to £1,685 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
3.71ct Cushion
£3,904 GBP