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Cushion|Lab Grown|IGI

3.55ct E IF Cushion Lab Grown Diamond

ID • E/IF • IGI LG631466065

Shape and cutting style on the report: Square cushion brilliant

Certificate IGI LG631466065

Diamond specifications and retailer prices

From £1,481 GBP
$1,985 USD
As of October 31, 2026
Save £8,682 GBP (85%) vs most expensive(unlock to see where)
24 retailers carry this diamond
Most expensive: £10,164 GBP at Yadav Diamonds · As of October 30, 2026
View at Yadav Diamonds

About this 3.55ct lab-grown cushion diamond

This 3.55ct lab-grown cushion sits in the three to five carat band, graded E colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG631466065 or 631466065. Listed at 24 retailers as of October 30, 2026, with prices from £1,481 to £10,164, a £8,682 spread on the same certified stone. Yadav Diamonds lists it at £10,164. 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
E
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.7°
Pavilion angle30.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG631466065
Dimensions8.56 × 8.20 × 5.29 mm
L/W Ratio1.04
Girdle conditionFaceted
Culet sizePointed
Top View
8.56 mm8.20 mm3.55 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG631466065
Side View
Table 63.0%Crown 36.7°Girdle: MED-THKPavilion 30.3°Culet: NoneDepth 61.1%

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 31
Current: £2,330 GBP|Low: £1,481 GBP|High: £10,098 GBP|Avg: £4,067 GBP|-11.4%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
Retailer 19
Retailer 20
October 31, 2026
Retailer 6£1,481 GBP
Retailer 12£1,575 GBP
Retailer 3£1,689 GBP
Retailer 13£1,703 GBP
Retailer 1£2,330 GBP
Retailer 10£2,422 GBP
Retailer 19£2,537 GBP
Retailer 2£2,553 GBP
Retailer 16£2,570 GBP
Retailer 9£3,219 GBP
Retailer 18£3,832 GBP
Retailer 15£3,934 GBP
Retailer 20£4,097 GBP
Retailer 7£4,135 GBP
Retailer 4£4,583 GBP
Retailer 17£4,864 GBP
Retailer 8£5,931 GBP
Retailer 11£7,028 GBP
Retailer 14£7,665 GBP
Retailer 5£9,105 GBP

35 data points across 20 retailers

24 retailers£1,481 GBP to £10,164 GBP

A
Cheapest Retailer
-
£1,481 GBP
$1,985 USD
Final sale: no returns
A
Retailer 2
-
£1,575 GBP
$2,110 USD
View
A
Retailer 3
-
£1,689 GBP
$2,263 USD
View
Retailer 4
-
£1,703 GBP
$2,282 USD
View
Price last confirmed 20 days ago
A
Retailer 5
-
£1,892 GBP
$2,535 USD
View
Final sale: no returns
A
Retailer 6
-
£2,330 GBP
View
A
Retailer 7
-
£2,422 GBP
$3,245 USD
View
A
Retailer 8
-
£2,537 GBP
$3,399 USD
View
A
Retailer 9
-
£2,553 GBP
$3,421 USD
View
A
Retailer 10
-
£2,570 GBP
€3,280 EUR
View
A
Retailer 11
-
£3,219 GBP
View
Retailer 12
-
£3,832 GBP
A$7,899 AUD
View
Price last confirmed 9 days ago
B+
Retailer 13
-
£3,934 GBP
ZAR 85,155 ZAR
View
A
Retailer 14
-
£4,097 GBP
$5,490 USD
View
B+
Retailer 15
-
£4,135 GBP
$5,541 USD
View
Retailer 16
-
£4,467 GBP
$5,985 USD
View
Price last confirmed 10 days ago
B+
Retailer 17
-
£4,583 GBP
$6,140 USD
View
B+
Retailer 18
-
£4,864 GBP
View
B+
Retailer 19
-
£5,931 GBP
$7,946 USD
View
Retailer 20
-
£7,028 GBP
A$14,487 AUD
View
Price last confirmed 22 days ago
B
Retailer 21
-
£7,665 GBP
$10,270 USD
View
Retailer 22
-
£8,710 GBP
$11,670 USD
View
Price last confirmed 17 days ago
B
Retailer 23
-
£9,105 GBP
$12,200 USD
View
Most Expensive
B
Yadav Diamonds
13157155 · Oct 30
£10,164 GBP
$13,618 USD
View
23 more retailers have this diamond
Prices start from £1,481 GBPSave up to £8,682 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
£1,481 GBP