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Cushion|Lab Grown|IGI

1.51ct F VS1 Cushion Lab Grown Diamond

EX • F/VS1 • IGI LG813661595

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG813661595

Diamond specifications and retailer prices

From £230 GBP
As of November 5, 2026
Save £692 GBP (75%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: £1,557 GBP at Queensmith · As of October 27, 2026
View at Queensmith

About this 1.51ct lab-grown cushion diamond

This 1.51ct 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 LG813661595 or 813661595. Listed at 17 retailers as of November 4, 2026, with a 301% 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

1.51
Carat
F
Colour
VS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.4°
Pavilion angle37.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG813661595
Dimensions7.11 × 6.20 × 4.12 mm
L/W Ratio1.15
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.11 mm6.20 mm1.51 ctF / VS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG813661595
Side View
Table 66.0%Crown 32.4°Girdle: STK-VTKPavilion 37.2°Culet: NoneDepth 66.5%

Caratlytics Score

How it works →
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 5
Current: £230 GBP|Low: £230 GBP|High: £1,077 GBP|Avg: £517 GBP|-1.6%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 5, 2026
Retailer 1£230 GBP
Retailer 8£320 GBP
Retailer 9£340 GBP
Retailer 7£341 GBP
Retailer 5£363 GBP
Retailer 3£389 GBP
Retailer 11£462 GBP
Retailer 10£663 GBP
Retailer 4£750 GBP
Retailer 2£770 GBP
Retailer 6£791 GBP
Retailer 12£988 GBP

33 data points across 12 retailers

17 retailers£230 GBP to £921 GBP

A
Cheapest Retailer
-
£230 GBP
A
Retailer 2
-
£320 GBP
View
A
Retailer 3
-
£340 GBP
View
A
Retailer 4
-
£341 GBP
View
A
Retailer 5
-
£363 GBP
View
A
Retailer 6
-
£387 GBP
View
A
Retailer 7
-
£389 GBP
View
Retailer 8
-
£462 GBP
View
Price last confirmed 10 days ago
Retailer 9
-
£663 GBP
View
Price last confirmed 8 days ago
B
Retailer 10
-
£675 GBP
View
B+
Retailer 11
-
£719 GBP
View
B+
Retailer 12
-
£750 GBP
View
B
Retailer 13
-
£770 GBP
View
B+
Retailer 14
-
£791 GBP
View
B
Retailer 15
-
£921 GBP
View
Retailer 16
-
£988 GBP
View
Price last confirmed 19 days ago
Most Expensive
Queensmith
LG813661595 · Oct 27
£1,557 GBP
View
Price last confirmed 9 days ago
16 more retailers have this diamond
Prices start from £230 GBPSave up to £692 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
1.51ct Cushion
£230 GBP