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Cushion|Lab Grown|IGI

1.51ct H VS1 Cushion Lab Grown Diamond

ID • H/VS1 • IGI LG546217665

Shape and cutting style on the report: Cushion brilliant

Certificate IGI LG546217665

Diamond specifications and retailer prices

From £247 GBP
As of November 4, 2026
Save £526 GBP (68%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: £773 GBP at Brilliant Earth · As of November 4, 2026
View at Brilliant Earth

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 H colour (near-colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG546217665 or 546217665. Listed at 3 retailers as of November 4, 2026, with prices from £247 to £773, a £526 spread on the same certified stone. Brilliant Earth lists it at £773. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.51
Carat
H
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.9°
Pavilion angle38.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG546217665
Dimensions7.49 × 6.25 × 4.22 mm
L/W Ratio1.20
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
7.49 mm6.25 mm1.51 ctH / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG546217665
Side View
Table 62.5%Crown 36.9°Girdle: THN-STKPavilion 38.5°Culet: NoneDepth 67.5%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 4
Current: £773 GBP|Low: £234 GBP|High: £847 GBP|Avg: £494 GBP|-8.8%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
October 31, 2026
Retailer 3£247 GBP
Retailer 2£305 GBP
Retailer 5£428 GBP
Retailer 6£470 GBP
Retailer 7£595 GBP
Retailer 4£623 GBP
Brilliant Earth£773 GBP

13 data points across 7 retailers

3 retailers£247 GBP to £773 GBP

B+
Cheapest Retailer
-
£247 GBP
A
Retailer 2
-
£305 GBP
View
Most Expensive
B+
Brilliant Earth
20456958A · Nov 4
£773 GBP
$1,040 USD
View
2 more retailers have this diamond
Prices start from £247 GBPSave up to £526 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
£247 GBP