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Cushion|Lab Grown|IGI

1.63ct E SI1 Cushion Lab Grown Diamond

ID • E/SI1 • IGI LG488122840

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG488122840

Diamond specifications and retailer prices

From £162 GBP
$216 USD
As of October 28, 2026
Save £1,227 GBP (88%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £1,389 GBP at Do Amore Diamonds · As of October 29, 2026
View at Do Amore Diamonds

About this 1.63ct lab-grown cushion diamond

This 1.63ct 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 LG488122840 or 488122840. Listed at 13 retailers as of October 28, 2026, with prices from £162 to £1,389, a £1,227 spread on the same certified stone. Do Amore Diamonds lists it at £1,389. 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

1.63
Carat
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.9°
Pavilion angle39.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG488122840
Dimensions7.46 × 6.67 × 4.34 mm
L/W Ratio1.12
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
7.46 mm6.67 mm1.63 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG488122840
Side View
Table 62.5%Crown 32.9°Girdle: MediumPavilion 39.1°Culet: NoneDepth 65.1%

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: £367 GBP|Low: £162 GBP|High: £1,217 GBP|Avg: £526 GBP|+4.4%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
October 30, 2026
Retailer 9£162 GBP
Retailer 6£179 GBP
Retailer 2£322 GBP
Retailer 1£367 GBP
Retailer 8£433 GBP
Retailer 4£650 GBP
Retailer 7£729 GBP
Retailer 3£796 GBP
Retailer 5£991 GBP

44 data points across 9 retailers

13 retailers£162 GBP to £1,389 GBP

A
Cheapest Retailer
-
£162 GBP
$216 USD
Final sale: no returns
A
Retailer 2
-
£179 GBP
$239 USD
View
B+
Retailer 3
-
£241 GBP
$321 USD
View
A
Retailer 4
-
£312 GBP
$415 USD
View
A
Retailer 5
-
£322 GBP
€409 EUR
View
A
Retailer 6
-
£367 GBP
View
A
Retailer 7
-
£433 GBP
$577 USD
View
Retailer 8
-
£650 GBP
$865 USD
View
Price last confirmed 8 days ago
B+
Retailer 9
-
£661 GBP
$880 USD
View
B+
Retailer 10
-
£729 GBP
$971 USD
View
B+
Retailer 11
-
£796 GBP
View
B
Retailer 12
-
£991 GBP
$1,320 USD
View
Most Expensive
B
Do Amore Diamonds
27-50C0F166E · Oct 29
£1,389 GBP
$1,850 USD
View
12 more retailers have this diamond
Prices start from £162 GBPSave up to £1,227 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
1.63ct Cushion
£162 GBP