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Cushion|Lab Grown|IGI

1.61ct F SI1 Cushion Lab Grown Diamond

ID • F/SI1 • IGI LG583396370

Shape and cutting style on the report: Cushion brilliant

Certificate IGI LG583396370

Diamond specifications and retailer prices

From €1,453 EUR
$1,630 USD
As of November 2, 2026
1 retailer carries this diamond
Only listing: €1,453 EUR 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 1.61ct lab-grown cushion diamond

This 1.61ct lab-grown cushion sits in the one-and-a-half to two carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG583396370 or 583396370. Listed at a single retailer as of November 2, 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

1.61
Carat
F
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle40.2°
Pavilion angle35.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG583396370
Dimensions8.52 × 6.07 × 4.09 mm
L/W Ratio1.40
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
8.52 mm6.07 mm1.61 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG583396370
Side View
Table 61.0%Crown 40.2°Girdle: MED-STKPavilion 35.9°Culet: NoneDepth 67.4%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Nov 2
Current: €1,453 EUR|Low: €452 EUR|High: €1,453 EUR|Avg: €986 EUR|+1.9%
Brilliant Earth
Retailer 2
January 8, 2026
Retailer 2€452 EUR
Brilliant Earth€1,453 EUR

6 data points across 2 retailers

1 retailer

B
Brilliant Earth
7470110B · Nov 2
€1,453 EUR
$1,630 USD
View

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B
1.61ct Cushion
€1,453 EUR