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Cushion|Lab Grown|IGI

1.61ct E SI1 Cushion Lab Grown Diamond

ID • E/SI1 • IGI LG497146598

Shape and cutting style on the report: Square cushion brilliant

Certificate IGI LG497146598

Diamond specifications and retailer prices

From £158 GBP
$211 USD
As of October 28, 2026
Save £738 GBP (82%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £896 GBP at MOH London · As of October 29, 2026
View at MOH London

About this 1.61ct lab-grown cushion diamond

This 1.61ct 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 top-tier cut grade and certified by IGI LG497146598 or 497146598. Listed at 13 retailers as of October 28, 2026, with prices from £158 to £896, a £738 spread on the same certified stone. MOH London lists it at £896. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.61
Carat
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle38.5°
Pavilion angle36°
OriginLab Grown
Grading LabIGI
CertificateIGI LG497146598
Dimensions6.63 × 6.59 × 4.42 mm
L/W Ratio1.01
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
6.63 mm6.59 mm1.61 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG497146598
Side View
Table 62.0%Crown 38.5°Girdle: STK-THKPavilion 36°Culet: NoneDepth 67.1%

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: £896 GBP|Low: £158 GBP|High: £903 GBP|Avg: £460 GBP|+8.4%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
October 29, 2026
Retailer 5£158 GBP
Retailer 11£191 GBP
Retailer 9£263 GBP
Retailer 4£308 GBP
Retailer 6£330 GBP
Retailer 2£351 GBP
Retailer 12£381 GBP
Retailer 10£386 GBP
Retailer 8£502 GBP
Retailer 13£653 GBP
Retailer 7£657 GBP
Retailer 3£864 GBP
MOH London£896 GBP

41 data points across 13 retailers

13 retailers£158 GBP to £896 GBP

A
Cheapest Retailer
-
£158 GBP
$211 USD
Final sale: no returns
A
Retailer 2
-
£191 GBP
$254 USD
View
Price last confirmed 17 days ago
B+
Retailer 3
-
£263 GBP
$350 USD
View
A
Retailer 4
-
£308 GBP
View
Price last confirmed 24 days ago
A
Retailer 5
-
£330 GBP
€418 EUR
View
A
Retailer 6
-
£351 GBP
View
A
Retailer 7
-
£381 GBP
$507 USD
View
A
Retailer 8
-
£386 GBP
$514 USD
View
B+
Retailer 9
-
£502 GBP
$669 USD
View
B+
Retailer 10
-
£653 GBP
$870 USD
View
B+
Retailer 11
-
£657 GBP
$875 USD
View
Price last confirmed 8 days ago
B
Retailer 12
-
£864 GBP
$1,150 USD
View
Most Expensive
B
MOH London
LG497146598 · Oct 29
£896 GBP
View
12 more retailers have this diamond
Prices start from £158 GBPSave up to £738 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
1.61ct Cushion
£158 GBP