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Cushion|Lab Grown|IGI

3.55ct G VS1 Cushion Lab Grown Diamond

EX • G/VS1 • IGI LG753508718

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG753508718

Diamond specifications and retailer prices

From £494 GBP
As of October 30, 2026
Save £1,161 GBP (70%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £1,655 GBP at Brilliance · As of November 1, 2026
View at Brilliance

About this 3.55ct lab-grown cushion diamond

This 3.55ct lab-grown cushion sits in the three to five carat band, graded G colour (near-colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG753508718 or 753508718. Listed at 10 retailers as of October 30, 2026, with prices from £494 to £1,655, a £1,161 spread on the same certified stone. Brilliance lists it at £1,655. 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

3.55
Carat
G
Colour
VS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.2°
Pavilion angle30.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG753508718
Dimensions11.00 × 7.65 × 4.91 mm
L/W Ratio1.44
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
11.00 mm7.65 mm3.55 ctG / VS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG753508718
Side View
Table 63.0%Crown 34.2°Girdle: MED-THKPavilion 30.9°Culet: NoneDepth 64.2%

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: Oct 30
Current: £1,655 GBP|Low: £469 GBP|High: £2,083 GBP|Avg: £1,066 GBP|+5.9%
Brilliance
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
October 31, 2026
Retailer 9£494 GBP
Retailer 6£549 GBP
Retailer 8£690 GBP
Retailer 7£734 GBP
Retailer 2£735 GBP
Retailer 13£902 GBP
Retailer 10£923 GBP
Retailer 11£935 GBP
Retailer 4£1,251 GBP
Retailer 12£1,444 GBP
Retailer 3£1,553 GBP
Brilliance£1,655 GBP
Retailer 5£2,083 GBP

11 data points across 13 retailers

10 retailers£494 GBP to £1,655 GBP

A
Cheapest Retailer
-
£494 GBP
A
Retailer 2
-
£549 GBP
$735 USD
View
B+
Retailer 3
-
£690 GBP
$924 USD
View
A
Retailer 4
-
£734 GBP
$984 USD
View
A
Retailer 5
-
£735 GBP
View
Retailer 6
-
£902 GBP
ZAR 19,522 ZAR
View
Price last confirmed 17 days ago
A
Retailer 7
-
£923 GBP
$1,237 USD
View
A
Retailer 8
-
£935 GBP
A$1,927 AUD
View
B+
Retailer 9
-
£1,444 GBP
$1,935 USD
View
Most Expensive
B
Brilliance
D37545283 · Nov 1
£1,655 GBP
$2,218 USD
View
9 more retailers have this diamond
Prices start from £494 GBPSave up to £1,161 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
3.55ct Cushion
£494 GBP