FERROLUCE Maracana
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This lamp consists of two parts: the bowl-shaped upper part is made of ceramic, and the lower part is made of painted and natural glass.‎ Its round shape is reminiscent of the structure of stadiums and arenas.‎ Its name refers to the Brazilian stadium: "Maracana".

https://www.ferroluce.it/en/collezione/pendants/deco/maracana/c2741/ 
https://www.ferroluce.it/en/collezione/pendants/deco/maracana/c2745/ 

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Corona 9 version
Materials used in the model:
CoronaLegacyMtl - requires CoronaRender version at least 1.5
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Those who work in a V-Ray version lower than 3.1, be careful, in the materials in the BRDF section there is Microfaset GTR (GGX), if your version is older than 3.1, then the BRDF field will be empty. Choose Blinn, Phong or Ward - whichever is preferable for you