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Cushion|Lab Grown|IGI

1.51ct I VS1 Cushion Lab Grown Diamond

ID • I/VS1 • IGI LG407985750

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG407985750

Diamond specifications and retailer prices

From £302 GBP
As of November 4, 2026
Save £501 GBP (62%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: £803 GBP at MOH London · As of November 5, 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 I colour (near-colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG407985750 or 407985750. Listed at 3 retailers as of November 4, 2026, with prices from £302 to £803, a £501 spread on the same certified stone. MOH London lists it at £803. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.51
Carat
I
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle33.7°
Pavilion angle36.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG407985750
Dimensions7.01 × 6.43 × 4.07 mm
L/W Ratio1.09
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory grown diamond was created by chemical vapor deposition process (CVD) Type IIa
Top View
7.01 mm6.43 mm1.51 ctI / VS1
OriginLab Grown
CutIdeal
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateIGI LG407985750
Side View
Table 67.5%Crown 33.7°Girdle: STK-THKPavilion 36.9°Culet: NoneDepth 63.3%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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Price History

Last verified: Nov 4
Current: £803 GBP|Low: £284 GBP|High: £816 GBP|Avg: £497 GBP|-0.2%
MOH London
Retailer 2
Retailer 3
Retailer 4
November 5, 2026
Retailer 2£302 GBP
Retailer 3£419 GBP
Retailer 4£461 GBP
MOH London£803 GBP

12 data points across 4 retailers

3 retailers£302 GBP to £803 GBP

B+
Cheapest Retailer
-
£302 GBP
B+
Retailer 2
-
£419 GBP
View
Most Expensive
B
MOH London
LG407985750 · Nov 5
£803 GBP
View
2 more retailers have this diamond
Prices start from £302 GBPSave up to £501 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+
1.51ct Cushion
£302 GBP