CaratHunter
Plans
Cushion|Lab Grown|IGI

1.51ct F VS1 Cushion Lab Grown Diamond

EX • F/VS1 • IGI LG823677258

Shape and cutting style on the report: Cushion brilliant

Certificate IGI LG823677258

Diamond specifications and retailer prices

From £426 GBP
As of November 5, 2026
Save £707 GBP (62%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: £1,169 GBP at MOH London · As of October 26, 2026
View at MOH London

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 LG823677258 or 823677258. Listed at 17 retailers as of November 5, 2026, with a 166% 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 angle32.1°
Pavilion angle40.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG823677258
Dimensions5.85 × 5.85 × 3.55 mm
L/W Ratio1.00
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
5.85 mm5.85 mm1.51 ctF / VS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG823677258
Side View
Table 55.0%Crown 32.1°Girdle: MED-THKPavilion 40.9°Culet: NoneDepth 60.7%

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 5
Current: £1,169 GBP|Low: £253 GBP|High: £1,883 GBP|Avg: £689 GBP|-37.8%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
November 2, 2026
Retailer 14£297 GBP
Retailer 18£341 GBP
Retailer 17£390 GBP
Retailer 12£426 GBP
Retailer 16£444 GBP
Retailer 5£493 GBP
Retailer 3£516 GBP
Retailer 11£518 GBP
Retailer 6£539 GBP
Retailer 9£564 GBP
Retailer 4£684 GBP
Retailer 10£722 GBP
Retailer 2£812 GBP
Retailer 13£832 GBP
Retailer 7£970 GBP
Retailer 15£1,134 GBP
Retailer 8£1,162 GBP
MOH London£1,169 GBP

35 data points across 18 retailers

17 retailers£426 GBP to £1,134 GBP

Retailer 1
-
£341 GBP
Price last confirmed 10 days ago
Retailer 2
-
£390 GBP
View
Price last confirmed 9 days ago
A
Retailer 3
-
£426 GBP
View
B+
Retailer 4
-
£444 GBP
View
Retailer 5
-
£493 GBP
View
Price last confirmed 14 days ago
Retailer 6
-
£516 GBP
View
Price last confirmed 10 days ago
B+
Retailer 7
-
£518 GBP
View
Retailer 8
-
£539 GBP
View
Price last confirmed 11 days ago
B+
Retailer 9
-
£564 GBP
View
Retailer 10
-
£684 GBP
View
Price last confirmed 12 days ago
Retailer 11
-
£722 GBP
View
Price last confirmed 12 days ago
B
Retailer 12
-
£812 GBP
View
B
Retailer 13
-
£832 GBP
View
Retailer 14
-
£970 GBP
View
Price last confirmed 11 days ago
B
Retailer 15
-
£1,134 GBP
View
Retailer 16
-
£1,162 GBP
View
Price last confirmed 12 days ago
Most Expensive
MOH London
LG823677258 · Oct 26
£1,169 GBP
View
Price last confirmed 10 days ago
16 more retailers have this diamond
Prices start from £426 GBPSave up to £707 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
£426 GBP