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Cushion|Lab Grown|IGI

1.67ct E SI1 Cushion Lab Grown Diamond

VG • E/SI1 • IGI LG520295377

Shape and cutting style on the report: Square cushion modified brilliant

Certificate IGI LG520295377

Diamond specifications and retailer prices

From £262 GBP
$349 USD
As of October 25, 2026
Save £1,615 GBP (86%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £1,877 GBP at Do Amore Diamonds · As of October 29, 2026
View at Do Amore Diamonds

About this 1.67ct lab-grown cushion diamond

This 1.67ct 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 LG520295377 or 520295377. Listed at 11 retailers as of October 25, 2026, with prices from £262 to £1,877, a £1,615 spread on the same certified stone. Do Amore Diamonds lists it at £1,877. 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

1.67
Carat
E
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35°
Pavilion angle39.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG520295377
Dimensions6.77 × 6.70 × 4.66 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
6.77 mm6.70 mm1.67 ctE / SI1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG520295377
Side View
Table 62.5%Crown 35°Girdle: STK-VTKPavilion 39.8°Culet: NoneDepth 69.6%

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 25
Current: £1,877 GBP|Low: £207 GBP|High: £1,877 GBP|Avg: £696 GBP
Do Amore Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 29, 2026
Retailer 8£262 GBP
Retailer 7£328 GBP
Retailer 5£330 GBP
Retailer 9£432 GBP
Retailer 2£514 GBP
Retailer 6£661 GBP
Retailer 11£690 GBP
Retailer 3£943 GBP
Retailer 10£1,052 GBP
Retailer 4£1,164 GBP
Do Amore Diamonds£1,877 GBP

35 data points across 11 retailers

11 retailers£262 GBP to £1,877 GBP

A
Cheapest Retailer
-
£262 GBP
$349 USD
A
Retailer 2
-
£328 GBP
$437 USD
View
B+
Retailer 3
-
£330 GBP
$440 USD
View
B+
Retailer 4
-
£432 GBP
$575 USD
View
B+
Retailer 5
-
£514 GBP
View
Retailer 6
-
£661 GBP
$880 USD
View
Price last confirmed 11 days ago
B+
Retailer 7
-
£690 GBP
$918 USD
View
B
Retailer 8
-
£943 GBP
$1,256 USD
View
B
Retailer 9
-
£1,052 GBP
$1,400 USD
View
B
Retailer 10
-
£1,164 GBP
View
Most Expensive
C
Do Amore Diamonds
27-2807F5B39 · Oct 29
£1,877 GBP
$2,500 USD
View
10 more retailers have this diamond
Prices start from £262 GBPSave up to £1,615 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
1.67ct Cushion
£262 GBP