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Cushion|Lab Grown|IGI

1.73ct G SI1 Cushion Lab Grown Diamond

ID • G/SI1 • IGI LG602393425

Shape and cutting style on the report: Square cushion brilliant

Certificate IGI LG602393425

Diamond specifications and retailer prices

From £1,015 GBP
$1,360 USD
As of October 31, 2026
1 retailer carries this diamond
Only listing: £1,015 GBP at Brilliant Earth
Only one retailer lists this diamond right now, and it is shown above, so there is nothing to unlock. Similar diamonds are carried by several retailers.
View at Brilliant Earth

About this 1.73ct lab-grown cushion diamond

This 1.73ct lab-grown cushion sits in the one-and-a-half to two carat band, graded G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG602393425 or 602393425. Listed at a single retailer as of October 31, 2026. If it later appears at another store, Carat Hunter will surface the price comparison automatically. 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

1.73
Carat
G
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.9°
Pavilion angle35.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG602393425
Dimensions7.04 × 6.89 × 4.41 mm
L/W Ratio1.02
Girdle conditionFaceted
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
7.04 mm6.89 mm1.73 ctG / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG602393425
Side View
Table 61.0%Crown 34.9°Girdle: THN-STKPavilion 35.7°Culet: NoneDepth 64.0%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Oct 31
Current: £1,015 GBP|Low: £351 GBP|High: £1,090 GBP|Avg: £686 GBP
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
March 23, 2026
Retailer 4£351 GBP
Retailer 2£510 GBP
Retailer 3£643 GBP
Retailer 5£764 GBP
Brilliant Earth£1,015 GBP

33 data points across 5 retailers

1 retailer

B
Brilliant Earth
8276787Y · Oct 31
£1,015 GBP
$1,360 USD
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B
1.73ct Cushion
£1,015 GBP