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Cushion|Lab Grown|IGI

1.75ct E SI1 Cushion Lab Grown Diamond

ID • E/SI1 • IGI LG563241289

Shape and cutting style on the report: Cushion brilliant

Certificate IGI LG563241289

Diamond specifications and retailer prices

From £1,044 GBP
$1,390 USD
As of October 29, 2026
3 retailers carry this diamond
Most expensive: £1,044 GBP at Brilliant Earth
View at Brilliant Earth

About this 1.75ct lab-grown cushion diamond

This 1.75ct 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 LG563241289 or 563241289. Listed at 3 retailers as of October 29, 2026. 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

1.75
Carat
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.2°
Pavilion angle39.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG563241289
Dimensions8.09 × 6.51 × 4.43 mm
L/W Ratio1.24
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
8.09 mm6.51 mm1.75 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG563241289
Side View
Table 62.0%Crown 32.2°Girdle: THN-STKPavilion 39.1°Culet: NoneDepth 68.0%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 29
Current: £1,044 GBP|Low: £119 GBP|High: £1,547 GBP|Avg: £661 GBP|-2.8%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 4, 2026
Retailer 6£179 GBP
Retailer 2£340 GBP
Retailer 9£358 GBP
Retailer 10£427 GBP
Retailer 8£463 GBP
Retailer 3£558 GBP
Retailer 5£667 GBP
Retailer 4£884 GBP
Retailer 11£909 GBP
Brilliant Earth£1,044 GBP
Retailer 7£1,532 GBP

9 data points across 11 retailers

3 retailers

B+
Retailer 1
-
£340 GBP
$453 USD
Price last confirmed 25 days ago
B
Retailer 2
-
£884 GBP
View
Price last confirmed 23 days ago
Most Expensive
B
Brilliant Earth
6700430Y · Oct 29
£1,044 GBP
$1,390 USD
View
2 more retailers have this diamond

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.

B+
1.75ct Cushion
£1,044 GBP