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Cushion|Lab Grown|IGI

1.55ct E IF Cushion Lab Grown Diamond

VG • E/IF • IGI LG683565140

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG683565140

Diamond specifications and retailer prices

From £609 GBP
$816 USD
As of October 30, 2026
Save £1,887 GBP (76%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £2,496 GBP at With Clarity · As of October 30, 2026
View at With Clarity

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 E colour (colourless) and IF clarity (flawless or internally-flawless), with a very-good cut grade and certified by IGI LG683565140 or 683565140. Listed at 15 retailers as of October 30, 2026, with prices from £609 to £2,496, a £1,887 spread on the same certified stone. With Clarity lists it at £2,496. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.55
Carat
E
Colour
IF
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle41.4°
Pavilion angle40.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG683565140
Dimensions7.21 × 6.55 × 4.48 mm
L/W Ratio1.10
Girdle conditionFaceted
Culet sizeLarge
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.21 mm6.55 mm1.55 ctE / IF
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG683565140
Side View
Table 48.0%Crown 41.4°Girdle: THN-MEDPavilion 40.5°Culet: LargeDepth 68.4%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: £1,851 GBP|Low: £609 GBP|High: £3,090 GBP|Avg: £1,271 GBP|-40.1%
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
October 30, 2026
Retailer 5£609 GBP
Retailer 3£632 GBP
Retailer 10£720 GBP
Retailer 4£722 GBP
Retailer 13£999 GBP
Retailer 7£1,014 GBP
Retailer 8£1,064 GBP
Retailer 9£1,161 GBP
Retailer 14£1,313 GBP
Retailer 12£1,512 GBP
Retailer 11£1,572 GBP
Retailer 1£1,851 GBP
Retailer 6£2,153 GBP
Retailer 2£2,224 GBP

45 data points across 14 retailers

15 retailers£609 GBP to £2,496 GBP

A
Cheapest Retailer
-
£609 GBP
$816 USD
Final sale: no returns
Retailer 2
-
£632 GBP
$847 USD
View
Price last confirmed 13 days ago
A
Retailer 3
-
£720 GBP
$965 USD
View
A
Retailer 4
-
£722 GBP
$967 USD
View
A
Retailer 5
-
£999 GBP
$1,338 USD
View
B+
Retailer 6
-
£1,014 GBP
View
B+
Retailer 7
-
£1,064 GBP
€1,358 EUR
View
B+
Retailer 8
-
£1,161 GBP
ZAR 25,140 ZAR
View
Retailer 9
-
£1,313 GBP
A$2,706 AUD
View
Price last confirmed 22 days ago
B+
Retailer 10
-
£1,512 GBP
$2,026 USD
View
Retailer 11
-
£1,572 GBP
A$3,240 AUD
View
Price last confirmed 9 days ago
B
Retailer 12
-
£1,851 GBP
$2,480 USD
View
B
Retailer 13
-
£2,153 GBP
$2,884 USD
View
B
Retailer 14
-
£2,224 GBP
$2,980 USD
View
Most Expensive
B
With Clarity
683565140 · Oct 30
£2,496 GBP
$3,344 USD
View
14 more retailers have this diamond
Prices start from £609 GBPSave up to £1,887 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
£609 GBP