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Cushion|Lab Grown|IGI

5.50ct D VS1 Cushion Lab Grown Diamond

ID • D/VS1 • IGI LG825699745

Shape and cutting style on the report: Cushion brilliant

Certificate IGI LG825699745

Diamond specifications and retailer prices

From £3,107 GBP
€3,965 EUR
As of October 31, 2026
Save £2,035 GBP (40%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: £5,142 GBP at Brilliant Earth · As of October 30, 2026
View at Brilliant Earth

About this 5.5ct lab-grown cushion diamond

This 5.5ct lab-grown cushion sits in the over five carat band, graded D colour (colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG825699745 or 825699745. Listed at 4 retailers as of October 30, 2026, with prices from £3,107 to £5,142, a £2,035 spread on the same certified stone. Brilliant Earth lists it at £5,142. Lab-grown prices in the 2ct and up range have fallen 40 to 60% over the last 18 months. Use the cross-retailer spread above to find the lowest current listing.

The 4Cs

5.50
Carat
D
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle43.4°
Pavilion angle41.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG825699745
Dimensions11.60 × 9.09 × 6.38 mm
L/W Ratio1.28
Girdle conditionFaceted
Culet sizeLarge
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
11.60 mm9.09 mm5.50 ctD / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG825699745
Side View
Table 56.0%Crown 43.4°Girdle: STK-THKPavilion 41.4°Culet: LargeDepth 70.2%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 31
Current: £5,142 GBP|Low: £2,808 GBP|High: £9,702 GBP|Avg: £4,502 GBP|-47.0%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
October 31, 2026
Retailer 4£2,808 GBP
Retailer 2£3,107 GBP
Retailer 3£4,980 GBP
Brilliant Earth£5,142 GBP

9 data points across 4 retailers

4 retailers£3,107 GBP to £5,142 GBP

Retailer 1
-
£2,808 GBP
$3,762 USD
Price last confirmed 9 days ago
B+
Retailer 2
-
£3,107 GBP
€3,965 EUR
View
B
Retailer 3
-
£4,980 GBP
$6,672 USD
View
Most Expensive
B
Brilliant Earth
21728688A · Oct 30
£5,142 GBP
$6,890 USD
View
3 more retailers have this diamond
Prices start from £3,107 GBPSave up to £2,035 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+
5.50ct Cushion
£3,107 GBP