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Cushion|Lab Grown|IGI

1.55ct F VVS2 Cushion Lab Grown Diamond

ID • F/VVS2 • IGI LG687567371

Shape and cutting style on the report: Square cushion modified brilliant

Certificate IGI LG687567371

Diamond specifications and retailer prices

From £376 GBP
As of November 4, 2026
Save £743 GBP (66%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £1,119 GBP at Brilliant Earth · As of November 3, 2026
View at Brilliant Earth

About this 1.55ct lab-grown cushion diamond

This 1.55ct lab-grown cushion sits in the one-and-a-half to two carat band, graded F colour (colourless) and VVS2 clarity (very-very-slightly-included), with a top-tier cut grade and certified by IGI LG687567371 or 687567371. Listed at 14 retailers as of November 3, 2026, with prices from £376 to £1,119, a £743 spread on the same certified stone. Brilliant Earth lists it at £1,119. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.55
Carat
F
Colour
VVS2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle39.8°
Pavilion angle41.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG687567371
Dimensions6.76 × 6.72 × 4.61 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
6.76 mm6.72 mm1.55 ctF / VVS2
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG687567371
Side View
Table 67.0%Crown 39.8°Girdle: MED-STKPavilion 41.9°Culet: NoneDepth 68.6%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 4
Current: £1,119 GBP|Low: £224 GBP|High: £1,230 GBP|Avg: £560 GBP|-9.0%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 2, 2026
Retailer 10£224 GBP
Retailer 11£250 GBP
Retailer 7£376 GBP
Retailer 3£376 GBP
Retailer 6£385 GBP
Retailer 4£410 GBP
Retailer 5£420 GBP
Retailer 9£521 GBP
Retailer 2£586 GBP
Retailer 8£900 GBP
Retailer 12£910 GBP
Brilliant Earth£1,119 GBP

40 data points across 12 retailers

14 retailers£376 GBP to £1,119 GBP

Retailer 1
-
£224 GBP
Price last confirmed 11 days ago
A
Retailer 2
-
£376 GBP
View
A
Retailer 3
-
£376 GBP
View
A
Retailer 4
-
£385 GBP
View
A
Retailer 5
-
£408 GBP
View
A
Retailer 6
-
£410 GBP
View
A
Retailer 7
-
£420 GBP
View
Retailer 8
-
£521 GBP
View
Price last confirmed 9 days ago
B+
Retailer 9
-
£586 GBP
View
B+
Retailer 10
-
£686 GBP
View
B+
Retailer 11
-
£756 GBP
View
B+
Retailer 12
-
£900 GBP
View
B
Retailer 13
-
£910 GBP
View
Most Expensive
B
Brilliant Earth
14978608A · Nov 3
£1,119 GBP
$1,510 USD
View
13 more retailers have this diamond
Prices start from £376 GBPSave up to £743 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
1.55ct Cushion
£376 GBP