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Cushion|Lab Grown|IGI

1.69ct E SI1 Cushion Lab Grown Diamond

VG • E/SI1 • IGI LG515211426

Shape and cutting style on the report: Square cushion brilliant

Certificate IGI LG515211426

Diamond specifications and retailer prices

From £453 GBP
$603 USD
As of October 28, 2026
Save £1,642 GBP (78%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: £2,095 GBP at MOH London · As of October 26, 2026
View at MOH London

About this 1.69ct lab-grown cushion diamond

This 1.69ct 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 LG515211426 or 515211426. Listed at 8 retailers as of October 26, 2026, with prices from £453 to £2,095, a £1,642 spread on the same certified stone. MOH London lists it at £2,095. 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

1.69
Carat
E
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle38.6°
Pavilion angle38.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG515211426
Dimensions6.60 × 6.60 × 4.49 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
6.60 mm6.60 mm1.69 ctE / SI1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG515211426
Side View
Table 67.0%Crown 38.6°Girdle: STK-THKPavilion 38.1°Culet: NoneDepth 68.0%

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 28
Current: £2,095 GBP|Low: £324 GBP|High: £2,117 GBP|Avg: £807 GBP|-0.9%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
October 29, 2026
Retailer 6£453 GBP
Retailer 8£499 GBP
Retailer 7£604 GBP
Retailer 3£735 GBP
Retailer 5£776 GBP
Retailer 2£778 GBP
Retailer 4£788 GBP
MOH London£2,095 GBP

41 data points across 8 retailers

8 retailers£453 GBP to £2,095 GBP

A
Cheapest Retailer
-
£453 GBP
$603 USD
Final sale: no returns
B+
Retailer 2
-
£499 GBP
$665 USD
View
B+
Retailer 3
-
£604 GBP
$805 USD
View
B+
Retailer 4
-
£735 GBP
€932 EUR
View
B
Retailer 5
-
£776 GBP
$1,033 USD
View
B
Retailer 6
-
£778 GBP
View
Retailer 7
-
£788 GBP
$1,050 USD
View
Price last confirmed 8 days ago
Most Expensive
B
MOH London
LG515211426 · Oct 26
£2,095 GBP
View
7 more retailers have this diamond
Prices start from £453 GBPSave up to £1,642 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
1.69ct Cushion
£453 GBP