Cushion|Lab Grown|IGI

1.55ct E SI1 Cushion Lab Grown Diamond

VG • E/SI1 • IGI LG825630871

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG825630871

Diamond specifications and retailer prices

From £161 GBP
$215 USD
As of October 30, 2026
Save £715 GBP (82%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: £877 GBP at Reve Diamonds · As of October 30, 2026
View at Reve Diamonds

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 SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI LG825630871 or 825630871. Listed at 8 retailers as of October 30, 2026, with prices from £161 to £877, a £715 spread on the same certified stone. Reve Diamonds lists it at £877. 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
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle35.1°
Pavilion angle41.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG825630871
Dimensions7.51 × 5.99 × 4.14 mm
L/W Ratio1.25
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.51 mm5.99 mm1.55 ctE / SI1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI LG825630871
Side View
Table 67.0%Crown 35.1°Girdle: STK-VTKPavilion 41.1°Culet: NoneDepth 69.1%

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 30
Current: £324 GBP|Low: £161 GBP|High: £877 GBP|Avg: £311 GBP|+2.0%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Reve Diamonds
October 30, 2026
Retailer 6£161 GBP
Retailer 4£240 GBP
Retailer 2£302 GBP
Retailer 1£324 GBP
Retailer 5£354 GBP
Retailer 3£615 GBP
Reve Diamonds£877 GBP

20 data points across 7 retailers

8 retailers£161 GBP to £877 GBP

A
Cheapest Retailer
-
£161 GBP
$215 USD
Final sale: no returns
B+
Retailer 2
-
£240 GBP
$320 USD
View
B+
Retailer 3
-
£302 GBP
€383 EUR
View
B+
Retailer 4
-
£324 GBP
View
B+
Retailer 5
-
£354 GBP
$472 USD
View
B
Retailer 6
-
£615 GBP
$818 USD
View
B
Retailer 7
-
£826 GBP
$1,100 USD
View
Most Expensive
B
Reve Diamonds
69302FC56 · Oct 30
£877 GBP
$1,168 USD
View
7 more retailers have this diamond
Prices start from £161 GBPSave up to £715 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
£161 GBP